苯酚 、 环氧丁烯 在
四(三苯基膦)钯 作用下,
以
四氢呋喃 为溶剂,
反应 2.0h,
以that two products were obtained in a 1:4 ratio (1-hydroxy-4-phenoxy-but-2-ene: 4-hydroxy-3-phenoxy-but-1-ene)的产率得到1-Hydroxy-4-phenoxy-but-2-ene
参考文献:
名称:
Process for the preparation of 1,4-disubstituted 2-butenes
HClO4·SiO2 catalysed synthesis of alkyl 3-deoxy-hex-2-enopyranosides from 2-hydroxy glucal ester: application in the synthesis of a cis-fused bicyclic ether and a 4-amino-C-glucoside
作者:Preeti Gupta、Nitee Kumari、Aditi Agarwal、Yashwant D. Vankar
DOI:10.1039/b810654a
日期:——
A variety of alcohols react with 2,3,4,6-tetra-O-acetyl-1,5-anhydro-D-arabino-hex-1-enopyranose 1 in the presence of a catalytic amount of HClO4 supported on silica gel to give the corresponding alkyl 3-deoxy-hex-2-enopyranosides 2 in high yield, with short reaction times (10–45 mins) and good α-selectivity. Work-up merely involves filtration of the reagent, followed by chromatographic purification of the crude product. This methodology has also been employed in the synthesis of a bicyclic ether, a useful precursor for cyclic polyethers, and a 4-amino-C-glucoside.
Process for the preparation of 1,4-disubstituted 2-butenes
申请人:Eastman Kodak Company
公开号:US05189199A1
公开(公告)日:1993-02-23
A process is disclosed for the preparation of 1,4-dioxy-2-butenes by reacting 3,4-epoxy-1-butene with an oxygen nucleophile in the presence of a Pd(O) complex catalyst.
Enantioselective Synthesis of the 1,3‐Dienyl‐5‐Alkyl‐6‐Oxy Motif: Method Development and Total Synthesis
作者:Jie Wang、Chuning Guo、Yaqian Liu、Yunpeng Ji、Hongli Jia、Houhua Li
DOI:10.1002/anie.202400478
日期:2024.4.8
Method development and totalsynthesis have resulted in the enantioselective synthesis of the 1,3-dienyl-5-alkyl-6-oxy motif, and thus expedient total syntheses of three types of natural products (glutarimideantibiotics, α-pyrone polyketides and Lupin alkaloids), completed within 4–7 steps.