Sulfonium Ylides by (3+2) Cycloaddition of Arynes with Vinyl Sulfides: Stereoselective Synthesis of Highly Substituted Alkenes
作者:Yuanming Li、Christian Mück-Lichtenfeld、Armido Studer
DOI:10.1002/anie.201608144
日期:2016.11.7
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。