Polymethylhydrosiloxane (PMHS) in combination with CsF facilitates the cross-coupling of alkynes or benzothiazoles with an array of vinyl, styryl, and aryl halides or nonaflates as well as acid chlorides. Experimental and spectroscopic evidence indicates that these reactions involve the in situ generation of a siloxyl intermediate. These cross-couplings proceed relatively quickly at room temperature
聚
甲基氢硅氧烷(
PMHS)与CsF的结合有助于
炔烃或
苯并噻唑与一系列
乙烯基,
苯乙烯基和芳基卤化物或
壬二酸酯以及酰基
氯的交叉偶联。实验和光谱证据表明,这些反应涉及甲
硅烷氧基
中间体的原位生成。这些交叉偶联在室温和无胺条件下进行得相对较快。为了证明该方法的适用性,进行了全细胞毒性
丁醇内
酯(-)-可可内
酯A的合成。