ARYL SULFIDE DERIVATIVES AND ARYL SULFOXIDE DERIVATIVES AS ACARICIDES AND INSECTICIDES
申请人:BAYER CROPSCIENCE AKTIENGESELLSCHAFT
公开号:US20160145235A1
公开(公告)日:2016-05-26
The present invention relates to aryl sulphide and aryl sulphoxide derivatives, to the use thereof as acaricides and insecticides for controlling animal pests and to processes and intermediates for preparation thereof. The aryl sulphide and aryl sulphoxide derivatives have the general structure (I)
in which the respective radicals are as defined in the description.
@ 3-(Activated ester)methyl-3-cephem 4-carboxylic acids are prepared by the direct reaction of a 3-hydroxymethyl-3-cephem-4-carboxylic acid with an activated-0-ester-methyl forming acylating agent, in the presence of a 4-(tertiary amino) pyridine catalyst and an acid-absorbing base, in a non-polar liquid solvent, at -78 to 30 C. Certain products of the reaction are novel.
Process for preparing (+)-1,2-dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acid and related compounds
申请人:SYNTEX (U.S.A.) INC.
公开号:EP0284076A1
公开(公告)日:1988-09-28
1,2-Dihydro-3H-pyrrolo[1,2-a]pyrrole-1-carboxylic acid compounds of the formula,
in which Y is
OH ;
O-M+, wherein M is an alkali metal; or
NRR', wherein R is lower alkyl and R' is lower alkyl or aryl, or NRR' is the residue of a saturated cyclic amine,
are prepared from pyrrole and can be used to prepare pharmaceuticals.
式中的 1,2-二氢-3H-吡咯并[1,2-a]吡咯-1-羧酸化合物、
其中 Y 是
OH ;
O-M+,其中 M 为碱金属;或
NRR',其中 R 是低级烷基,R'是低级烷基或芳基,或 NRR' 是饱和环胺的残基、
由吡咯制备而成,可用于制备药物。