1,3-Dithiolane compounds and method of preparation thereof
Abstract
Abstract There are provided substituted 1,3-dithiolane compounds and a method for preparing the same. Said 1,3-dithiolane compounds are useful intermediates in the preparation of tetrahydro-7-oxobenzo[b]thien-4-ylureas and tetrahydro-4-oxo-1-naphthylureas which are known animal growth-promoting agents, which thiolanes are represented by the formula: ##STR1## wherein R 1 is a member selected from the group consisting of 2-thienyl and phenyl; R 2 is a member selected from the group consisting of ##STR2## wherein X is chlorine or bromine; R 3 and R 4 are each members selected from the group consisting of hydrogen and methyl; and when R 1 and R 2 are taken together with the carbon atom to which they are attached they represent a bicyclic moiety selected from the group consisting of ##STR3## wherein the carbon atom of said bicyclic moiety marked with an asterisk is also part of the 1,3-dithiolane ring; U is a moiety selected from the group consisting of ##STR4## and when U is ##STR5## said compounds are the racemic mixtures and the optical isomers thereof.
Inventors
- 👤 William Henry Gastrock
- 👤 Goro Asato
Bibliographic Details
Claims Analysis
Total Claims: 4References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |