Patent ID: 7858827

Claim:
A process for the preparation of a dialkoxyorganoborane (3) of the formula R 1 —B(OR 2 ) 2 , comprising the step of reacting a triorganoboroxin (1) of the formula (R 1 —BO) 3 and a trialkylborate (2) of the formula B(OR 2 ) 3 , wherein R 1 is C 1 -C 20 alkyl, C 3 -C 10 cycloalkyl, C 6 -C 14 aryl, C 7 -C 24 aralkyl, C 7 -C 24 alkaryl, C 2 -C 20 alkenyl, C 5 -C 15 cycloalkenyl, C 2 -C 20 alkynyl, CH 2 SiMe 3 , substituted C 1 -C 20 -alkyl and R 2 is C 1 -C 20 alkyl, or two R 2 groups in compounds (2) or (3) together with the —BO 2 — moiety form a cyclic structure of the formula with the divalent group R 3 selected from the group of consisting of —CH 2 CH 2 —, —CH(CH 3 )CH 2 —, —CH 2 CH 2 CH 2 —, —CH(CH 3 )CH(CH 3 )—, —CH(CH 2 CH 3 )CH 2 —, —C(CH 3 ) 2 C(CH 3 ) 2 —, —CH 2 C(CH 3 ) 2 CH 2 —, —(CH 2 ) 6 —, ortho-C 6 H 4 or ortho-C 6 H 3 alkyl.