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。
ION PAIR CATALYSIS OF TUNGSTATE AND MOLYBDATE
申请人:Nanyang Technological University
公开号:US20190105646A1
公开(公告)日:2019-04-11
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.
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