ES205656A1 - A procedure for preparing treonitrophenyl-N-acilamine propanodiols (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for preparing treonitrophenyl-N-acilamine propanodiols (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gruppo Lepetit SpA
Original Assignee
Lepetit SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lepetit SpAfiledCriticalLepetit SpA
Publication of ES205656A1publicationCriticalpatent/ES205656A1/en
Procedure for the preparation of threo-1-nitrophenyl-2-N-acylamino-1 3-propanediols of the formula in which R1 and R2 are the same or different and represent halogen hydrogen, a lower alkyl radical or a lower alkoxy radical and R3 is a halogen-substituted or unsubstituted lower aliphatic acyl radical for transforming an erythro-nitrophenylserine ester of the formula: ** (See formula) ** in which R1 and R2 have the same meaning as above R'3 is hydrogen or a substituted or unsubstituted halogen lower aliphatic acyl group and R is a lower alkyl radical in the alkyl oxazolincarbonate of the formula ** (See formula) ** in which R4 represents a halogen lower alkyl radical substituted or not selectively reducing the latter to In order to obtain an oxazolin-alcohol of the formula in which R4 has the same meaning as above and transform this compound into the desired final product. (Machine-translation by Google Translate, not legally binding)
ES0205656A1952-04-031952-10-04A procedure for preparing treonitrophenyl-N-acilamine propanodiols (Machine-translation by Google Translate, not legally binding)
ExpiredES205656A1
(en)
Procedure for the preparation of 1,2-diaril-3,3-dioxide-pirazolidines replaced in position 4, as well as their salts (Machine-translation by Google Translate, not legally binding)