induction in the iodocarbocyclizationreaction of 4-pentenylmalonate derivatives having a stereogenic center at an allylic or a homoallylic position has been investigated. The iodocarbocyclizationreactions of 3-oxy-4-pentenylmalonate derivatives proceeded with high cis-selectivity through stereoelectronic control of the oxygenated substituent at an allylic position. In the reaction of (S)-2-siloxy-4-pentenylmalonate
COATES R. M.; ROGERS B. D.; HOBBS S. J.; PECK D. R.; CURRAN D. P., J. AMER. CHEM. SOC., 109,(1987) N 4, 1160-1170
作者:COATES R. M.、 ROGERS B. D.、 HOBBS S. J.、 PECK D. R.、 CURRAN D. P.
DOI:——
日期:——
METHOD FOR PRODUCING TERMINAL ACRYLIC-MODIFIED POLYBUTADIENE OR TERMINAL ACRYLIC-MODIFIED HYDROGENATED POLYBUTADIENE, AND COMPOSITION CONTAINING SAME
申请人:Hashimoto Hiroki
公开号:US20130165586A1
公开(公告)日:2013-06-27
The present invention provides a method for producing a terminal acrylic-modified polybutadiene or terminal acrylic-modified hydrogenated polybutadiene that does not become white and turbid, without using an organotin compound. The production method of the present invention comprises reacting an acrylate or methacrylate represented by formula (I), a diisocyanate compound represented by formula (II), and a polybutadiene or hydrogenated polybutadiene having a hydroxyl group at a polymer terminal, represented by formula (III), in the presence of at least one selected from an organobismuth compound and a tetraalkoxyzirconium compound.