Patent · US Expired

Process and intermediates for the synthesis of diastereomeric compounds

US4751312A · kind A · utility

0Cited by

2References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Johann Gasteiger · Munich, DE
Karlheinz Kaufmann · Munich, DE
Rudolf Mengel · Ingelheim am Rhein, DE

Key dates

Filing date	Jul 19, 1985
Grant date	Jun 14, 1988
Priority date	—
Expiry date	Jul 19, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D303/48
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A new process for the controlled synthesis of the two diasteromeric forms of triazolyl-O,N-acetals of the formula ##STR1## in which R represents optionally substituted phenyl, optionally substituted phenoxy, optionally substituted alkoxy, optionally substituted alkoxy, optionally substituted alkylthio, alkylcarbonyl, nitro or halogen and PA1 n represents an integer from 0 to 5, with the proviso that R can represent identical or different radicals, if n represents an integer from 2 to 5. New trans-substituted oxiranes and their use as intermediates for the synthesis of compounds of the formula (I).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.