FIELD: chemistry.
SUBSTANCE: invention refers to the improved method of production of formula I compounds, Where R1 group is an A1 group where groups R2, R3, R4 and R5 are each hydrogen. Said compounds are the intermediate products for fungicides synthesis. The method includes the process, where formula II compound Where groups R1 and R2 are defined as stated for formula 1, and X is the chlorine, interacts with ammonia in presence of the base and of catalytic amount of at least one complex palladium compound where a complex palladium compound includes at least one ferrocenylbiphosphinic ligand chosen out of R(-)-di-tert-buthyl[1-[(S)-2(dicyclohexylphosphinil)ferrocenyl]ethyl]-phosphine and racemic di-tert-buthyl[1-[2(dicyclohexylphosphinil)ferrocenyl]ethyl]-phosphine. The reaction is performed in inert solvent. The complex palladium compound is preferably used with the ratio from 1:10000 to 1:10 relative to formula II compound and formula II compound is used in concentration from 0.01M to 5M. Proposed method can be used for commercial production of intender product.
EFFECT: high output and good quality of the product with simplified technology.
4 cl, 2 tbl, 9 ex
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Authors
Dates
2012-02-10—Published
2007-08-06—Filed