Stevens rearrangement of thioethers with arynes: a facile access to multi-substituted β-keto thioethers
作者:Xiao-Bo Xu、Zi-Hua Lin、Yuyin Liu、Jian Guo、Yun He
DOI:10.1039/c7ob00277g
日期:——
An effective method for the synthesis of multi-substituted β-keto thioethers via Stevens rearrangement of simple β-keto thioethers with arynes has been developed. In these reactions, successive C–S/C–H/C–C bonds were formed in one pot under mild and transition-metal free conditions to afford multi-substituted β-keto thioethers in moderate to good yields.
[EN] ION PAIR CATALYSIS OF TUNGSTATE AND MOLYBDATE<br/>[FR] CATALYSE PAR PAIRE D'IONS DE TUNGSTATE ET DE MOLYBDATE
申请人:UNIV NANYANG TECH
公开号:WO2017164813A1
公开(公告)日:2017-09-28
D The present invention relates to ion pair catalysts (I) comprising the cationic bisguanidinium ligand (A) and diperoxomolybdate anion (B). The present invention also relates to ion pair catalysts (III) comprising the cationic bisguanidinium ligand (C) and peroxotungstate anion (D). It further relates to the use of the said catalysts in the manufacture of enantiomerically enriched sulfoxides.
D The present invention relates to ion pair catalysts (I) comprising the cationic bisguanidinium ligand (A) and diperoxomolybdate anion (B). The present invention also relates to ion pair catalysts (III) comprising the cationic bisguanidinium ligand (C) and peroxotungstate anion (D). It further relates to the use of the said catalysts in the manufacture of enantiomerically enriched sulfoxides.
D 本发明涉及由阳离子双胍配体(A)和二氧钼酸阴离子(B)组成的离子对催化剂(I)。本发明还涉及由阳离子双胍配体(C)和过氧钨酸盐阴离子(D)组成的离子对催化剂(III)。本发明还涉及上述催化剂在制造对映体富集的硫氧化物中的用途。
Preparation of Asymmetric Phase-transfer Catalyst, 1,4-Bis((4S,5S)-1,3-bis(3,5-di-tert-butylbenzyl)-4,5-diphenylimidazolidin-2-ylidene)piperazine-1,4-diium chloride