Assertion: pyridine | /r/MadeOf | said condensation
Facets:
Source sentences:
text: 5- ethyl pyridine, said mixture comprising the monomethylol and polymethylol derivatives of said Z-methyl, 5-ethyl pyridine formed by said condensation, which comprises removing water and unreacted 2-methyl, 5-ethyl pyridine from said mixture by distillation, adding a strong a1- kaline agent to said reaction mixture, and heating the remaining mixture of reaction products still containing said polymethylol derivative in' the presence of not less than about 4% by weight of said strong alkaline agent at temperatures at which water and formaldehyde are split off from said polymethylol derivative to form said 2-vinyl, 5-ethyl pyridine.
text: The process for producing a monovinyl derivative of a homologue of pyridine froma crude reaction mixture of the condensation of formaldehyde with a homologue of pyridine having a reactive methyl group, said mixture comprisingthe condensation reaction products including monomethylol and polymethylol derivatives of said homologue of pyridine formed by saidcondensation, which comprises incorporating with said reaction products not less than about 4% caustic alkali based on the Weight of. said crude reaction mixture less unreacted homolog of pyridine and water contained therein, removing material present in said crude reaction mixture boiling lower than said monomethylol and polymethylol derivatives from said mixture by distillation, and heating the remaining mixture of reaction products still containing said polymethylol derivative in the presence of said caustic alkali at temperatures at which water and formaldehyde are split off from said polymethylol derivative to form said monovinyl derivative.
text: The process for producing 2-vinyl, 5-ethyl pyridine from the crude reaction mixture of the 10 condensation of formaldehyde with Z-methyl, 5-ethyl pyridine, said mixture comprising the monomethylol and polymethylol derivatives of said Z-methyl, 5-ethyl pyridine formed by said condensation, and unreacted Z-methyl, 5-ethyl pyridine which comprises removing water and unreacted 2-methyl, 5-ethyl pyridine from said mixture by distillation under vacuum, and heating the remaining mixture of reaction products still containing said polymethylol derivative in the presence of not less than about 4% by weight of caustic alkali at temperatures at which water and formaldehyde are split off from said polymethylol derivative and water is split off from said monomethylol derivative to form said
text: The process for producing Z-vinyl, 5-ethyl pyridine from the crude reaction product mixture of the condensation of formaldehyde in an aqueous solution with Z-methyl, 5-ethyl pyridine, said mixture comprising the monomethylol and poly methylol derivatives of Z-methyl, 5-ethyl pyridine formed by said condensation, unreacted