We report an acid-catalyzed formal cycloaddition and dehydrative substitution reaction of tertiary propargylic alcohols and heteroareneboronic acids. The properties of the substituents on the alkynyl moiety determines the regioselectivity of the reaction, which could selectively construct fused heterocycles, tetrasubstituted allenes, or 1,3-dienes. This reaction proceeds efficiently with a wide array
我们报告了叔炔
丙醇和杂
芳烃硼酸的酸催化形式环加成和脱
水取代反应。炔基部分取代基的性质决定了反应的区域选择性,可以选择性地构建稠合杂环、四取代
丙二烯或1,3-二烯。该反应在广泛的底物范围内高效进行,产率高达 89%。该协议的一个显着优势是所需的无过渡
金属和温和条件。