Patents Represented by Attorney Richard C. Daniel Mark R. Billups

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  • Process of synthesizing n-acyl auxiliaries
    Patent number: 5461162
    Abstract: A process of synthesizing N-acyl auxiliary compounds is disclosed. A compound of the formula: ##STR1## is reacted with an anhydride in the presence of a lithium salt and an amine base to produce the N-acylated auxiliary.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: October 24, 1995
    Assignee: Merck & Co., Inc.
    Inventors: Guo-Jie Ho, David J. Mathre