Acylated aminothiol compound

Details Acylated aminothiol compound Acylated aminothiol compound

2005-11-15

2005-11-15

Desai, Rita (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S574000, C548S571000

Reexamination Certificate

active

06965038

ABSTRACT:
The present invention discloses an acylated derivative of an aminothiol compound having a general formula II wherein R1-R4and R6are substitutable ligands. Such compounds can perform as superior catalysts in asymmetric addition reactions of organic zinc and aldehyde. According to the present invention, only less than 0.02% of the acylated derivative is needed to obtain high enantioselectivity over 99% enantiomeric excess.

REFERENCES:
Nishimura et al., 1965, CAS: 62:8904.
Kossenjans et al., 1999, CAS:131:350834.
Wipf et al., 1998, CAS: 129:289723.
Kang et al., 1996, CAS: 126:131036.
Jin et al., 1996, 126:103872.
Kang et al., 1994, CAS: 123:142957.
Poelert et al., 1994, CAS: 121:280925.

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