A facile asymmetric synthesis of Δ3-2-Hydroxybakuchiol, Bakuchiol and ent-Bakuchiol
作者:Qian-Qian Xu、Qun Zhao、Guang-Sheng Shan、Xi-Cheng Yang、Qi-Yuan Shi、Xinsheng Lei
DOI:10.1016/j.tet.2013.10.064
日期:2013.12
A facile asymmetric synthesis of Delta(3)-2-Hydroxybakuchiol, Bakuchiol, and ent-Bakuchiol is described through one common intermediate bearing a chiral all-carbon quaternary carbon center, which involves stereoselectively unconjugated alkylation of the alpha,beta-unsaturated imide bearing Evans' auxiliary, Takai-Utimoto reaction, Negishi reaction, and Heck reaction as key steps. (C) 2013 Elsevier Ltd. All rights reserved.
277. Organic fluorine compounds. Part X. Reaction of organic compounds with iodine in the presence of silver fluoride or trifluoroacetate