41156-60-9

Upstream product

• 67-56-1 methanol 
• 142-29-0 cyclopentene 
• 64770-10-1 cyclopentyldibromoborane dimethyl sulfide complex 
• 124-41-4 sodium methylate 

Downstream Products

• 117311-84-9 C₅H₉B(C₄H₄O₄NCH₃) 

Relevant academic research and scientific papers

Quinolinium dyes and borates in photopolymerizable compositions

Dye compounds of the formula wherein X is for example CH, C-CH3 or +NOR L-; R is inter alia C1-C6alkyl; R1 is for example C1-C8alkoxy or C1-C12alkyl; s is 0 to 4; R2 is for example hydrogen; Ar is for example a group Y inter alia is C1-C6alkyl or C1-C6alkoxy; r in the formula (A) is 0 to 5, in the formulae (B) and (E) is 0 to 9 and in the formula (D) is 0 to 7; and L is an anion; in combination with an electron donor compound, especially a borate compound, are suitable as photoinitiators for the photopolymerization of radically polymerizable compositions.

Organoboranes. 30. Convenient procedures for the synthesis of alkyl- and alkenylboronic acids and esters

Alkyl- and alkenyldibromoborane-dimethyl sulfide complexes, readily obtained by the hydroboration of alkenes and alkynes with dibromoborane-dimethyl sulfide (HBBr2-SMe2), react with water, giving the corresponding boronic acids, and with alcohols and glycols to give the corresponding esters. Various procedures have been developed for the preparation of boronic esters with primary and secondary alcohols, glycols, and tertiary alcohols. Boronic acids react with primary and secondary alcohols reversibly to form the corresponding esters. The equilibrium may be conveniently displaced in favor of ester by carrying out the reaction in pentane, from which the water component separates. This procedure does away with the necessity of azeotrope distillation of a ternary mixture, extensively used previously for the esterification of boronic acids.