The present invention aims at providing a process for producing an amic acid ester useful as an intermediate for agrochemical, easily at a low cost industrially.
The present invention provides a process for producing an amic acid ester represented by the following general formula (7):
1
(wherein A is a substituted or unsubstituted lower alkylene group or the like; R
1
is a substituted or unsubstituted lower alkyl group or the like; and R
3
is a hydrogen atom or a lower alkyl group), which process comprises reacting, in the presence of water, an amino acid represented by the following general formula (1):
2
(wherein A has the same definition as given above) with a halogenated carbonic acid ester represented by the following general formula (2):
3
(wherein R
1
has the same definition as given above and X is a halogen atom) to form an amide compound represented by the following general formula (3):
4
(wherein A and R
1
have the same definitions as given above), then reacting the amide compound with a halogenated carbonic acid ester represented by the following general formula (4):
5
(wherein R
2
is a substituted or unsubstituted lower alkyl group or the like; and X is a halogen atom) to form, in the system, a mixed acid anhydride represented by the following general formula (5):
6
(wherein A, R
1
and R
2
have the same definitions as given above), and reacting the mixed acid anhydride with an amine compound represented by the following general formula (6):
7
(wherein R
3
has the same definition as given above and Het is a substituted or unsubstituted heterocyclic group).
Compositions de teinture des fibres kératiniques contenant des dérives d'indolizine et procédé de teinture
申请人:L'OREAL
公开号:EP1129691A2
公开(公告)日:2001-09-05
L'invention a pour objet une composition pour la teinture d'oxydation des fibres kératiniques contenant au moins un dérivé d'indolizine à titre de coupleur et au moins une base d'oxydation.
L'invention a également pour objet l'utilisation de dérivés d'indolizine à titre de coupleur pour la teinture d'oxydation des fibres kératiniques en association avec au moins une base d'oxydation, ainsi que les procédés de teinture les mettant en oeuvre.
Indolizine derivatives, compositions comprising at least one coupler chosen from indolizine derivatives and at least one oxidation base, and methods for using same
申请人:——
公开号:US20020002749A1
公开(公告)日:2002-01-10
Compositions for oxidation dyeing of keratin fibers comprising at least one oxidation base and at least one coupler chosen from indolizine derivatives, methods for using the same for oxidation dyeing of keratin fibers, and compounds chosen from indolizine derivatives.
NOUVEAUX DERIVES D'INDOLIZINE, LEUR PROCEDE DE PREPARATION ET LES COMPOSITIONS THERAPEUTIQUES LES COMPRENANT
申请人:sanofi-aventis
公开号:EP1957490A1
公开(公告)日:2008-08-20
COMPOUNDS FOR TREATMENT OF DRUG RESISTANT AND PERSISTENT TUBERCULOSIS
申请人:THE CALIFORNIA INSTITUTE FOR BIOMEDICAL RESEARCH
公开号:US20160194299A1
公开(公告)日:2016-07-07
Described herein are compounds and compositions for treating drug resistant and persistent tuberculosis. Also described herein is a method of screening for identifying biofilm formation inhibitors.