of in situ generated arynes with vinyl sulfides provides benzannulated sulfonium ylides in a (3+2) cycloaddition. Trapping of the intermediate ylides with electrophiles (proton transfer or a second aryne addition) and subsequent β‐elimination give rise to di‐, tri‐, or tetrasubstituted alkenes with high stereoselectivity. Experimental studies and DFT calculations provide insight into the mechanisms of
原位生成的
芳烃与
乙烯基硫化物的反应可在(3 + 2)环加成反应中提供苯甲酰化sulf化烷基化ides。用亲电子试剂(质子转移或第二个
芳烃加成)捕集中间亚烷基并随后进行β-消除反应会生成具有高立体选择性的二,三或四取代烯烃。实验研究和DFT计算可洞悉这些级联反应的机理。