bluuebunny/crossref_metadata_2025_split huggingface dataset:
C‐nitroso compounds. Part XXVII. The lability of chlorine in (1‐chloroalkyl)nitroxides. Reaction with tri‐n‐butyltin hydride and nitric oxide
Authors: Kayen A. H. M. , de Boer K. , de Boer Th. J. 
Published: September 2010

Abstract(1‐Chloroalkyl)nitroxides1(Table I) are converted by tri‐n‐butyltin hydride into halogenfree nitroxides3(Table II)viaintermediate nitrones2(reactions [6], [7]). This provides a direct method to generate non‐symmetrical di‐sec‐alkylnitroxides5afrom chloro nitroso compounds andsec‐halides by the action of tributyltin hydride (reaction [5]).Assisted by the presence of an external radical X•, (1‐chloroalkyl)nitroxides1can lose chlorinehomolyticallyto yield a nitrone (reaction [11]) in a process, which is reversible if the X‐Cl bond is weak.The mechanism of interference of NO as an external radical is discussed in view of its essential role in the photolysis ofgem‐chloro‐nitroso compounds which proceedsvia(1‐chloroalkyl)nitroxides1. These nitroxides undergo C‐Cl homolysis in most solvents; in alcoholic solventsheterolyticloss of chlorine (reactions [13]‐[15]) cannot be excluded when NO is present.(1‐Chloroalkyl)nitroxides1may also decompose thermally into a chloro nitroso compound and a chloroalkyl radical by α‐cleavage of either of the two C‐N bonds.
C‐nitroso compounds. Part XXIX. The photo‐oxidation of monomeric aliphatic nitroso compounds
Authors: Broekhoven F. J. G. , Bolsman Th. A. B. M. , de Boer Th. J. 
Published: September 2010

AbstractMolecular oxygen does not attack 2‐methyl‐2‐nitrosopropane (t‐BuNO) in the dark, but by irradiating solutions in benzene with light of 500‐700 nm, it gives tert‐butyl nitrate in yields up to 70%, provided oxygen is present in large excess. The mechanism involves tert‐butyl radicals and NO, formed upon primary photodissociation. Oxygen attacks both, but t‐Bu• much faster than NO, and consequently there is preferential t‐BuOO• radical formation. Its further reaction with NO leads to the nitrate, possibly via a highly unstable peroxy nitrite (t‐BuOONO). All by‐products (t‐BuNO2, t‐BuONO, t‐BuOH, isobutene) are readily explained with the same initial dissociation mechanism. No evidence was found for a route to t‐BuNO2 via an adduct between oxygen and the excited nitroso compound, as postulated earlier.The influence of DBMP (2,6‐di‐tert‐butyl‐4‐methylphenol) ‐ a t‐BuOO• and NO2 scavenger ‐ on the product distribution agrees with the overall mechanism.
Thermolysis of manganese(III) acetate in acetic anhydride and in acetic anhydride/acetic acid mixtures
Authors: de Klein W. J. 
Published: September 2010

AbstractThe thermolysis of manganese(III) acetate in acetic anhydride/acetic acid mixtures has been studied. In acetic anhydride succinic anhydride is the main reaction product with acetoxyacetic acid the main side product. In acetic acid the reverse situation is met CO2 is scarcely evolved, therefore intermediate formation of acetoxy radicals can only be a minor reaction. The manganese(III) acetate reduction in acetic anhydride is zero order in Mn(III). The reaction is catalyzed by acids and base. The enolisation of acetic anhydride is assumed to be the rate determining step. Acetoxyacetic acid and succinic acid originate from oxidation and dimerisation respectively, of carboxymethyl radicals produced from the enol and Mn(III) acetate. An activation energy of Ea = 26.8 kcal mole–1 is found thermolysis of manganese(III) acetate in pure acetic anhydride.
The determination of the stability constants of the complexes of silver(I) with pyridine and with pyrazole in aqueous solution
Authors: Padmos J. , Merman K. J. 
Published: September 2010

AbstractStability constants were determined by potentiometric measurements in concentration cells. In aqueous solution at 25° and μ = 0.1, we foundmagnified imageIn the calculations so‐called corresponding solutions have been used.
Vapour phase iodination of benzene derivatives. Formation of aryl iodides from bromides based on halogen exchange with iodobenzene
Authors: Vonk W. F. M. , Louw R. 
Published: September 2010

AbstractUnlike chlorination or bromination, direct gas‐phase iodination ArH → ArI is unpractically slow even at 500°. Chloro‐ and bromobenzenes, however, are converted into their iodo analogues. The rather rapid and selective reaction with bromobenzenes lead to exchange equilibria Ar′Br + ArI ⇌ Ar′I + ArBr at a temperature ≥400°. Using iodobenzene as reagent, this process can be used for preparing aryl iodides in high yields.
Dihalogeno(N,N‐diethyldithiocarbamato)‐arsenic(III), ‐antimony(III) and ‐bismuth(III)
Authors: Cras J. A. , van De Leemput P. J. H. A. M. , Willemse J. , Bosnian W. P. 
Published: September 2010

AbstractThe preparation and some physical measurements of a new class of group Vb dithiocarbamato compounds X2M(Et2dtc) (X = Cl, Br, I; M = As, Sb, Bi; Et2dtc = SC(S)NEt2) is reported. The crystal structure of Br2As(Et2dtc) is determined to a conventional R value of 0.05. The compound, crystallizing in the monoclinic space group P21/c with a = 6.407(2), b = 19.054(8), c = 9.405(4)Å, β = 104.0(2)° and Z = 4, is dimeric with two halogen bridges between 5‐coordinated As centres, the dtc ligands being bidentate. The coordination symmetry of the As is due to the stereochemical active lone electron pair as in IF5.
Recueil des Travaux Chimiques des Pays‐Bas Journal of the Royal Netherlands Chemical Society: General method for the synthesis of 3′,5′‐diesters and 2′‐acetals of the four common nucleosides
Authors: van Boom J. H. , Burgers P. M. J. , Haasnoot C. A. G. , Reese C. B. 
Published: September 2010

AbstractA procedure suitable for the preparation on a large scale of 5′‐O‐(methoxyacetyl)‐3′‐O‐propionylribonucleosides (9a‐d) from each of the four main ribonucleosides 6a‐d has been developed. The usefulness of 9a‐d as starting products for the synthesis of crystalline 2′‐O‐(methoxytetrahydropyranyl)‐ribonucleosides (11a‐d), which are key intermediates in the synthesis of oligoribonucleotides, has been demonstrated.
Kinetics and mechanism of base‐catalysed decomposition of tris(2,4‐pentanedionato)cobalt(III) in water and liquid ammonia
Authors: Balt S. , de Kieviet W. 
Published: September 2010

AbstractThe complex tris(2,4‐pentanedionato)cobalt(III) shows a base‐catalysed solvolysis reaction both in alkaline solution and in liquid ammonia. Activation parameters of the reaction in alkaline solution and in liquid ammonia are discussed and compared. A preliminary proposal for a mechanism involving pre‐dissociation of the acidic proton on the ligand is discussed.
Ring transformations and tele‐aminations in the reaction of 2‐halogeno‐ and 8‐halogeno‐1,7‐naphthyridines by potassium amide in liquid ammonia
Authors: van der Plas H.C. , Wózniak M. , van Veldhuizen A. 
Published: September 2010

Abstract2‐X‐1,7‐Naphthyridines (X = Br, Cl) give a variety of products on treatment with potassium amide, namely 2‐amino‐1,7‐naphthyridine [formed by an SN(AE) process], 4‐amino‐ and 8‐amino‐1,7‐naphthyridine (obtained by a tele‐amination[5N(AE)t]) and a ring transformed product, 2‐methyl‐4‐amino‐1,3,7‐triazanaphthalene. By 1H‐NMR spectroscopy of a solution of 2‐chloro‐1,7‐naphthyridine and its 8‐deutero‐ and 6,8‐dideutero derivatives in KNH2/NH3 good evidence has been obtained that at −40° 2‐chloro‐1,7‐naphthyridine is completely converted into a mixture of three 1 : 1 adducts formed by addition of the amide ion at C(8), C(6) and C(4). 8‐X‐1,7‐Naphthyridines (X = Cl, Br) give as sole reaction products 8‐amino‐1,7‐naphthyridine [5N(AE)] and 2‐amino‐1,7‐naphthyridine [5N(AE)t]. By 1H‐NMR spectroscopy strong evidence has been obtained that in 8‐X‐1,7‐naphthyridines the adduct formation occurs exclusively at C(2). The mechanism of the tele‐amination is discussed.
Stereospecific synthesis of mono‐ and di‐substituted 1‐alkenyl sulfides, phosphines and tin compounds.: A new application of substituted vinylcopper(I) intermediates. Part IV
Authors: Westmijze H. , Meijer J. , Vermeer P. 
Published: September 2010

AbstractA new stereospecific synthesis for substituted 1‐alkenyl sulfides, phosphines and tin compounds RR′C=CHX (X = −SMe, −PPh2, −SnPh3) is presented, starting from stereospecifically generated vinylcuprates [RR′C=CHCu(Br, I or R)]MgX′ (X′ = Cl or Br) and MeSSO2Me, Cl−PPh2 and Cl−SnPPh3, respectively, using tetrahydrofuran as solvent.Iodovinylcuprates [RR′CCHCu−I]MgX′ are obtained by selective methylation of the R‐radical in the mixed homocuprates [RR′CCHCu−R]MgX′ with 1 equivalent of Me−I at −50°.
C‐Nitroso compounds. Part XXX. The mechanism of photolysis of chloro nitroso compounds; irradiation of 2‐chloro‐2‐nitrosoadamantane in methanol
Authors: Kayen A. H. M. , de Boer Th. J. 
Published: September 2010

AbstractThe photolysis of gem‐chloronitrosoalkanes 1 in methanol has been studied with the model compound 2‐chloro‐2‐nitrosoadamantane (AdClNO) 1a. The mechanism is outlined in Scheme 1, and involves initial C‐NO bond cleavage. The generated chloroalkyl radicals 2 are captured by unchanged starting material giving the key intermediate, a 1,1′‐dichloro nitroxide 3. Although this process is probably reversible in inert solvents, nitroxide 3 is irreversibly removed in alcohols by conversion into a N‐(1‐chloroalkyl)nitrone 4, which is solvolysed to an equimolar mixture of an acetal and an oxime. During photolysis no ESR signals are observed. Nevertheless, the transient existence of chloro nitroxides 3 is supported by the detection of di‐sec‐alkylnitroxides 5, which are formed when a photolyzed solution of a chloro nitroso compound 1 is treated with tri‐n‐butylstannane (reaction [7]). The mechanism is further supported by photolysis of AdClNO in the presence of nitrosobenzene in aprotic solvents and isolation of the relatively stable hydrochloride of the nitrone: phenyladamantylideneamine oxide 6a.
A new synthesis of 3‐alken‐1‐ynes and 1‐methoxy‐1,3‐butadienes from cumulenic ethers and organocopper(I) compounds
Authors: Kleijn H. , Meijer J. , Westmijze H. , Vermeer P. 
Published: September 2010

AbstractCumulenic ethers of the type R′R″C=C=C=CHOMe 1 (R′, R″ = H, H; H, Me or Me, Me) are readily convertible into 3‐alken‐1‐ynes R′R″C=CR−C≡C−H 2 (R = alkyl or Ph) upon treatment with Grignard reagents, RMgX, in the presence of small amounts of CuBr. Interaction of substrates 1 with homocuprates [RCuR]MgX results generally in mixtures of 2 and 1‐methoxy‐1,3‐butadienes R′R″C=CRCH=CHOMe 3, whereas the adducts 3 are formed exclusively if heterocuprates [RCuBr]M (M = Li or MgX) are used.
Unexpected formation and crystal structure of 3‐(4‐toluenesulfonyl)‐2‐(4‐toluenesulfonylimino)‐1,3‐thiazetidine
Authors: Selling H.A. , Verweij A.B. , Piepenbroek A. , Kiers C. Th. 
Published: September 2010

AbstractReaction of N‐(4‐toluenesulfonyl)dithiocarbamic acid with methylene iodide, in the presence of base in DMSO solution has not yielded the expected (4‐toluenesulfonyl)‐1,3‐dithietane. Instead in low yield 3‐(4‐toluenesulfonyl)‐2‐(4‐toluenesulfonylimino)‐1,3‐thiazetidine has been isolated. The structure of the compound is deduced from elemental analysis and spectral data and confirmed by X‐ray diffraction.
Flash vapour‐phase pyrolysis of thiophene 1,1‐dioxides
Authors: van Tilborg W.J.M. , Plomp R. 
Published: September 2010

AbstractFlash vapour‐phase pyrolysis1of 2,5‐ or 2,4‐dialkyl‐, 2,5‐diphenyl‐ and dibenzothiophene 1,1‐dioxides at temperatures above 800°C/10−2mm Hg results in the formation of the corresponding furans. Thiophenes are obtained as co‐products if stabilized cyclobutadiene‐type intermediates can occur, especially at lower temperatures (<700°C) and/or higher pressure (10−1mm Hg). Both tetraphenylthiophene 1,1‐dioxide and tetraphenylcyclopentadienone yield diphenylacetylene as the main product. Benzothiete is obtained from the pyrolysis of benzothiophene 1,1‐dioxide. A general reaction scheme, starting from one common intermediate, is proposed which interrelates the formation of the aforementioned products. On the basis of this scheme the seemingly unrelated results reported in the literature can be easily explained.
A13C‐NMR study of squalene. Part II. Functionalized squalene‐like compounds
Authors: van Dommelen Marianne E. , van de Ven Leo J. M. , Buck Henk M. , de Haan Jan W. 
Published: September 2010

Abstract13C‐NMR chemical shifts of substituted squalenes and model compounds with a heteroatom in δ‐position to a double bond show that a steric interaction exists between the hetero‐atom and the double bond. This points to the presence of “precoiled” conformations in the hetero‐substituted squalenes and also in squalene itself. The nature of the interaction remains veiled, but it appears to be a general feature as is shown in a series of 2‐ and 3‐substituted thiophenes with a double bond in the side chain.
Reverse‐phase high‐performance liquid chromatography of protected peptides in the sequential synthesis of secretin and analogues
Authors: Bakkum J. T. M. , Beyerman H. C. , Hoogerhout P. , Olieman C. , Voskamp D. 
Published: September 2010

AbstractThe synthesis of the gastrointestinal hormone secretin, a heptacosapeptide, and analogues by the Repetitive Excess Mixed Anhydride (REMA) method was monitored by reverse‐phase high‐performance liquid chromatography (HPLC). All intermediate protected peptides were thus purified on a micro‐preparative scale (100‐200 μg, ≥ 20 nmole).The method allowed the separation of the protected diastereoisomeric [L‐Ala4]‐ and [D‐Ala4]‐des‐His1‐secretin.An aspartyl‐glycyl rearrangement could be detected in the protected pentacosa‐, hexacosa‐, and heptacosa‐peptide (secretin).
Pyrromethene‐BF2 complexes (4,4′‐difluoro‐4‐bora‐3a,4a‐diaza‐s‐indacenes). Synthesis and luminescence properties
Authors: de Wael E. Vos , Pardoen J. A. , van Koeveringe J. A. , Lugtenburg J. 
Published: September 2010

AbstractBF2 complexes of alkylated pyrromethenes were prepared by reacting the corresponding pyrromethenes with BF3·OEt2 under basic conditions. A striking aspect of these complexes is a pronounced fluorescence in organic solvents, even at room temperature, with fluorescence quantum yields between 0.3‐0.8. The efficiency and wavelength maximum of the fluorescence seems to be correlated with the substitution pattern at the 2 and 6 position. In none of these systems could phosphorescence be detected.
Evaluation of potentiometric data of weak polyelectrolytes taking account of nearest‐neighbour interaction
Authors: van Treslong C. J. Bloys 
Published: September 2010

AbstractFor a number of weak polyelectrolytes potentiometric titration data are interpreted on the basis of the dependence of the pK on the degree of ionization σ by considering the separate contributions for a) the mean electrostatic potential field, b) interactions between neighbouring functional groups, c) the distribution of the functional groups over the macromolecule, d) specific conformational aspects and branching. For the various polyelectrolytes this procedure leads at low ionic strength to a satisfactory picture of the charging process. However, on increasing the ionic strength definite discrepancies between the two weak polybases with strong neighbour interactions, poly(ethylene‐imine) and poly(vinylamine), and the other polyelectrolytes are found. The very strong dependence of pK on σ in these two cases even at high ionic strength can only be explained by concluding that the electrostatic potential at the site of reaction in these molecules is much higher than expected on the basis of additivity of the various specific effects.
Distribution of counterions in solutions of weak polyelectrolytes A study to the effects of neighbour interactions between charged sites and the structure of the macromolecule
Authors: van Treslong C. J. Bloys , Moonen P. 
Published: September 2010

AbstractCounterion distributing coefficients obtained from isopiestic and electromotive force experiments are presented for solutions of poly(acrylic acid), poly(vinylamine) and poly(ethyleneimine) with and without added salt. The observations lead to the conclusion that a number of factors determining the dependence of the dissociation equilibrium of the functional groups on the degree of ionization, do not affect or scarcely affect the counterion condensation. The very strong counterion binding by the branched poly(ethyleneimine) in comparison with linear polyelectrolytes indicates that the macromolecular structure is of great importance. The values found for the counterion distribution coefficient in salt‐free solutions of both linear polyelectrolytes are compared with values calculated from the theories of Lifson‐Katchalsky and Manning. The “additivity rules” for polyelectrolyte‐salt mixtures as formulated by Lifson‐Katchalsky are not obeyed.
Preparation, properties and X‐ray structure of trimethylantimony(V). bis(N,N‐dimethyldithiocarbamate)
Authors: Cras J. A. , Willemse J. 
Published: September 2010

AbstractThe preparation of an antimony(V) dithiocarbamato compound Me3Sb(Me2dtc)2 is reported. The X‐ray structure of this compound revealed an orthorhombic cell, space group Cmc21, with a = 7.448(4), b = 18.071(7) and c = 12.475(9) Å, which contains 4 formula units. The atomic parameters were refined to a conventional R value of 0.06. The structure can be described as a slightly deformed trigonal bipyramid, with the three methyl groups in equatorial position. Except for two of these methyl groups all non‐hydrogen atoms are positioned in the mirror plane Oyz. The stabilisation of the oxidation state + 5, which is very uncommon for antimony sulfur compounds is due to the σ‐electron‐donating methyl groups.
Furo‐ and thieno[2,3‐b]pyrazines. Part 1. Synthesis of 2‐substituted derivatives
Authors: Timmermans P. B. M. W. M. , Kruse C. G. , van der Gen A. 
Published: September 2010

AbstractA method is described for the preparation of 2‐substituted furo[2,3‐b]pyrazines (1) and thieno[2,3‐b]pyrazines (2) by ring closure of the 1,4‐diketones 7 (X = Y = O) and 1,4‐oxothiones 7 (X,Y = O,S). The requisite (thio)carbonyl compounds were obtained by reaction of esters and thiono esters with lithium salts of dianions, prepared from 3‐methyl‐2‐pyrazone (3, X = O) and 3‐methyl‐2‐pyrazinethione (3, X = S), respectively. The scope of these condensation and cyclisation reactions is discussed.
A 13C‐NMR study on the phenyllithium‐diazine adducts and the corresponding dihydrodiazines
Authors: van der Stoel R. E. , van der Plas H. C. 
Published: September 2010

AbstractPyrimidine, 4‐phenylpyrimidine, pyridazine, 3‐phenylpyridazine and pyrazine were treated with phenyllithium in ether, yielding adducts resulting from attack of phenyllithium on the various positions of the heteroaromatic ring. With pyrimidine addition took place mainly at C(4), with pyridazine at C(3). By using TMEDA, addition at C(2) in 4‐phenylpyrimidine and at C(4) in pyridazine was strongly promoted. The structure of the adducts was studied by NMR spectroscopy. The charge distribution pattern in the C(4)‐adduct of pyrimidine (2a) and in both the C(3)‐adduct (10a) and C(4)‐adduct (12a) of pyridazine was determined by comparing the carbon chemical shifts of these compounds with those of the corresponding dihydrodiazines obtained by hydrolysis of the adducts. C(5) in 2a was found to carry little negative charge. C(4) in 10a was shown to have a considerable amount of charge while the electron density at C(6) in 10a and both C(3) and C(5) in 12a was moderate.
Préparation et propriétés de cyclobutanethiones
Authors: Paquer D. , Vazeux M. , Leriverend P. 
Published: September 2010

AbstractFive substituted cyclobutanethiones were prepared from the corresponding cyclobutanones by sulfurization with hydrogen sulfide, in the presence of hydrogen chloride at 0°C. Spectroscopic data (UV, MS, 1H and 13C NMR) of these new compounds were determined and discussed.
The synthesis of δ‐substituted δ‐lactones
Authors: Peterse A. J. G. M. , de Groot Ae. , van Leeuwen P. M. , Penners N. H. G. , Koning B. H. 
Published: September 2010

AbstractThe addition of LiCH2COOEt to (n‐butylthiomethylene)cyclohexanones (1) gives after hydrolysis the ethyl 2‐formylcyclohex‐1‐eneacetates 4. With organolithium reagents these formyl esters can be cyclised to the 1‐substituted hexahydro‐3H‐2‐benzopyran‐3‐ones 5. After saponification of 4 an acid‐catalysed cyclisation gives the tetrahydro‐3H‐2‐benzopyran‐3‐ones 12.
Derivatives of meta‐di‐tert‐butylbenzene. Part V. The dissociation constants of 2‐halogeno‐3,5‐di‐tert‐butylanilines and the rates of deacetylation of the corresponding acetanilides
Authors: de Koning Adrianus Jan 
Published: September 2010

AbstractThe dissociation constants of 2‐chloro‐, 2‐bromo‐ and 2‐iodo‐3,5‐di‐tert‐butylanilines have been compared with those of 2‐chloro‐, 2‐bromo‐ and 2‐iodoaniline. The influence of the ortho‐halogen atom on the basicity of the anilines is not significantly affected by the buttressing tert‐butyl group. The rates of deacetylation of the corresponding acetanilides are discussed. It appears that the effective size of the ortho‐substituent markedly influences the reaction rate.
Furo‐ and thieno[2,3‐b]pyrazines. Part 2. Chemical properties of 2‐substituted derivatives
Authors: Kruse C. G. , Timmermans P. B. M. W. M. , van der Laken C. , van der Gen A. 
Published: September 2010

AbstractThe reactivity of 2‐substituted furo[2,3‐b]pyrazines (1a‐c) and thieno[2,3‐b]pyrazines (2a,b) towards several electrophilic reagents is described.Although the furan (thiophene) ring is strongly deactivated by the annelated pyrazine ring, 3‐halogenated derivatives could be obtained in excellent yields. By contrast, nitration occurred mainly in the phenyl side‐chain. Reaction with peracids easily provided the N7‐monoxides and, in the case of the thienopyrazines, also the N4, N7‐dioxide as well as a N7,S,S‐trioxide could be obtained. A mechanism is suggested for the formation of both 5‐ and 6‐chlorinated products from reaction of N7‐monoxides with phosphoryl chloride. The 3‐lithio derivative of 1a underwent ring opening upon protonation at −60°C to provide the pyrazone‐substituted acetylene 25a.
The nature of the SS bonds in different compounds. Part III. The crystal and molecular structures of S‐p‐tolyl p‐toluenethiosulfinate and S,S‐diphenyl dithiosulfite
Authors: Kiers C. Th , Vos Aafje 
Published: September 2010

AbstractThe crystal structures of S‐p‐tolyl p‐toluenethiosulfinate (1) and S,S‐diphenyl dithiosulfite (2) have been determined by X‐ray diffraction. Observed (average) values for the bonds involving a sulfur atoms are for (1): S‐S = 2.108(2), S‐O = 1.457(5), S‐C = 1.776(5) Å, and for (2): S‐S = 2.132(2), S‐O = 1.476(4), S‐C = 1.775(4) Å.
On the calculation and the use of gas chromatographic retention indices of perfluoro‐dideutero alkylated peptide derivatives
Authors: van de Graaf B. , Schuyl P. J. W. , Beyerman H. C. , Knol‐Kalkman A. 
Published: September 2010

AbstractThe calculation of gas chromatographic retention indices of the title compounds according to Nau and Biemann can be simplified if more accurate retention index increments assigned to the amino acid residues are used. The increments can be calculated effectively from experimental retention indices using standard least squares procedures. It is proposed to implement such a procedure in a computer program for the identification of the peptide derivatives.
Cannabis XVII: Pyrolysis of cannabidiol. Structure elucidation of two pyrolytic conversion products
Authors: Spronck H. J. W. , Salemink C. A. 
Published: September 2010

AbstractPyrolysis of cannabidiol in a nitrogen atmosphere, which was shown to be a good model for the smoking process, yields a mixture of compounds. Next to the previously described major rearrangement product 2 we have now isolated and identified two more compounds formed by rearrangement processes: 2‐[2‐(p‐tolyl)propyl]olivetol (3) and 4‐(3,4‐trans‐p‐mentha‐1,8‐dien‐3‐yl)olivetol (1b).