1391948-77-8Relevant articles and documents
Synthesis of 2 H-Chromenes via Unexpected [4 + 2] Annulation of Alkynyl Thioethers with o-Hydroxybenzyl Alcohols
Bu, Hao-Zhen,Li, Hang-Hao,Luo, Wen-Feng,Luo, Chen,Qian, Peng-Cheng,Ye, Long-Wu
supporting information, p. 648 - 652 (2020/01/31)
A novel Br?nsted acid-catalyzed reaction of alkynyl thioethers with o-hydroxybenzyl alcohols via an unexpected formal [4 + 2] annulation has been developed. This metal-free protocol leads to the facile and practical synthesis of valuable polysubstituted 2
One-pot preparation of arylethynyl sulfides and bis(arylethynyl) sulfides
Su, Qiong,Zhao, Zi-Jian,Xu, Feng,Lou, Peng-Cai,Zhang, Kai,Xie, De-Xun,Shi, Lei,Cai, Qing-Yun,Peng, Zhi-Hong,An, De-Lie
, p. 1551 - 1557 (2013/04/23)
An efficient preparation for arylethynyl sulfides 1 and bis(arylethynyl) sulfides 2 has been accomplished through a one-pot, three-step strategy that starts from arylethanonyl sulfides and bis(arylethanonyl) sulfides, respectively, without the use of various terminal arylacetylenes as substrates. When lithium hexamethyldisilazane (LHMDS), ClP(O)(OEt)2, and LHMDS were sequentially added to a tetrahydrofuran solution of different substrates [arylethanonyl sulfides or bis(arylethanonyl) sulfides], 1 or 2 were obtained in moderate to good yields. The reaction procedure involves the formation of an enol phosphate and a subsequent base-induced elimination. An efficient preparation of arylethynyl sulfides 1 and bis(arylethynyl) sulfides 2 has been accomplished by a one-pot, three-step strategy that starts from arylethanonyl sulfides and bis(arylethanonyl) sulfides, respectively, to give 1 and 2 in moderate to good yields. The reaction mechanism involves the formation of an enol phosphate that undergoes a subsequent base-induced elimination. Copyright
