摘要
对氯苯甲醛与α-三唑基频哪酮在KF/Al2O3/PEG4000存在下经Knoevenagel反应得85%烯基三唑酮(Ⅱ)(E/Z=0.65),Ⅱ经光异构化得92%E-Ⅱ(E/Z≥99/1);E-Ⅱ在手性相转移催化剂的存在下进行选择性不对称还原得92%Uniconazole-P(Ⅰ),ee=30%,E/Z≥99/1.Ⅰ是高效的植物生长延缓剂.
Chlorophenyl acetaldelyde reacting with α triazolylpinacolone in the presence of KF/Al 2O 3/PEG4000 will produce 85% vinyltriazolyl ketone(Ⅱ) with E/Z =0 65; Ⅱ is then isomerized by light to a yield of 92% E Ⅱ with E/Z ≥99/1. It is then reduced in the presence of certain charge transfer catalyst V by KBH 4 to 92% Uniconazole P with ee of 30%.
出处
《应用化学》
CAS
CSCD
北大核心
1998年第5期39-42,共4页
Chinese Journal of Applied Chemistry
基金
南开大学国家元素有机化学重点实验室基金