Preparation of cyclohexene carboxylate derivatives
A process for preparing compounds of formula (51) comprises reacting a compound of formula (50) with an oxidizing reagent wherein: R2 is a carboxylic acid protecting group; R4 is -C(R30)3 provided that R4, taken as a whole, contains 0 to 3 W groups substituted with 0 to 3 R29 groups and in addition...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | English |
Published |
31.01.2003
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | A process for preparing compounds of formula (51) comprises reacting a compound of formula (50) with an oxidizing reagent wherein: R2 is a carboxylic acid protecting group; R4 is -C(R30)3 provided that R4, taken as a whole, contains 0 to 3 W groups substituted with 0 to 3 R29 groups and in addition 1 to 12 carbon atoms substituted with 0 to 3 R22 groups. each R20 is independently H or alkyl; each R21 is independently R20, Br, Cl, F, I, CN, NO2 or N3; each R30 is independently H, R24, W or R24aW; W is optionally substituted carbocyclic or heterocyclic radical; R24 is independently R23 wherein each R23 is substituted with 0 to 3 R22 groups; R24a is optionally substituted independently alkylene, alkenylene or alkynylene; R23 is independently alkyl, alkenyl or alkynyl Y1 is a mono-, di- or unsubstituted amino group and each R22 and R29 are as defined in the specification. A process for preparing compounds of formula (61) comprises reacting a compound of formula (51) with a base wherein R2, R4, R21, R20 and Y1 are as defined above. |
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Bibliography: | Application Number: NZ19970507106 |