Alkynylation of aldehydes mediated by zinc and allyl bromide: a practical synthesis of propargylic alcohols
作者:Ji-Cai Zhou、Lei Zhao、Yuan Li、Ding-Qiang Fu、Zi-Cheng Li、Wen-Cai Huang
DOI:10.1007/s11164-016-2859-2
日期:2017.7
Abstract A practical synthesis of propargylic alcohols was developed by alkynylation of aldehydes mediated by zinc and allyl bromide. Aromatic, aliphatic and vinyl aldehydes react with phenylacetylene or 1-hexyne to obtain various propargylic alcohols at room temperature in up to 98% yield. This method is characterized with inexpensive materials, wide substrate scope, and mild reaction conditions,
摘要 通过锌和烯丙基溴介导的醛的炔基化反应,开发了一种实用的炔丙醇合成方法。芳族,脂族和乙烯基醛与苯乙炔或1-己炔反应,在室温下以高达98%的收率获得各种炔丙醇。该方法的特点是材料便宜,基材范围广,反应条件温和,并且易于放大。另外,该方案适用于α-酮酯和环氧化物的炔基化反应,分别生成α-叔羟基酯和α-炔醇。 图形概要