Pyridyl ethylation of lactam derivatives
US5686607A · kind A · utility
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5Claims
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Key dates
| Filing date | Aug 29, 1996 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Aug 29, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D401/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention is a highly efficient synthesis for making compounds of formula (iv) wherein R is C.sub.1-4 alkyl or benzyl; and R.sup.1, when present, is C.sub.1-4 alkyl, OH, O--C.sub.1-4 alkyl, or S--C.sub.1-4 alkyl; which are useful intermediates for making compounds such as those represented in formula (I). ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.