ES238561A2 - Procedure for the obtaining of 4-oxo-2- (halogen alkil-2,3-dihydro- (benzo-1,3-oxacinas) (Machine-translation by Google Translate, not legally binding)
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Procedure for the obtaining of 4-oxo-2- (halogen alkil-2,3-dihydro- (benzo-1,3-oxacinas) (Machine-translation by Google Translate, not legally binding)
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Boehringer Ingelheim Pharma GmbH and Co KG
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Dr Karl Thomae GmbH
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Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms
(AREA)
Abstract
Perfections introduced in the object of the main patent No. 232,328 by: Process for the preparation of 4-oxo-2- (halogenalkyl) -2,3-dihydro- [benzo-1,3-oxazines], characterized for the preparation of compounds of the general formula. ** (See formula) ** where R1 represents a hydrogen or halogen atom, R2 a halogen atom, preferably chlorine or bromine, and n number 2, characterized by treating a salicylamide optionally substituted on the halogen and acrolein, with hydrogen halide gaseous H2O using glacial acetic acid as a solvent, at temperatures below 50º and the reaction mixture is treated in a conventional manner. (Machine-translation by Google Translate, not legally binding)
ES0238561A1957-11-131957-11-13Procedure for the obtaining of 4-oxo-2- (halogen alkil-2,3-dihydro- (benzo-1,3-oxacinas) (Machine-translation by Google Translate, not legally binding)
ExpiredES238561A2
(en)
Procedure for the obtaining of 4-oxo-2- (halogen alkil-2,3-dihydro- (benzo-1,3-oxacinas) (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of 4-oxo-2- (halogen alkil-2,3-dihydro- (benzo-1,3-oxacinas) (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of 4-oxo-2- (halogen alkil-2,3-dihydro- (benzo-1,3-oxacinas) (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of 4-oxo-2- (halogen alkil-2,3-dihydro- (benzo-1,3-oxacinas) (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of 4-oxo-2- (halogenalki) -2,3-dihydro- (benzo-1,3-oxazines) (Machine-translation by Google Translate, not legally binding)
Procedure for preparing 6-halo-derivatives of 4-oxo-2- (halo-lower rent) -2,3-dihydro-benzo-1,3-oxazine (Machine-translation by Google Translate, not legally binding)
Procedure for the obtaining of 4-oxo-2- (halogenalkil) -2,3-dihydro - (benzo - 1,3-oxazines) (Machine-translation by Google Translate, not legally binding)