R is alkyl, phenyl, substituted phenyl, alkylsulfonyl, alkoxy, halo, or haloalkyl; R 1 is hydrogen, alkyl, phenyl or halo substituted phenyl; R 2 is hydrogen or alkyl; R 3 is
wherein: R 4 and R 5 are independently hydrogen, alkyl, phenyl, halophenyl, phenalkyl, halophenalkyl, cycloalkyl, cycloalkylmethyl, naphthyl, pyridyl, pyridylalkyl, or R 4 and R 5 taken together with nitrogen form hexamethyleneimine, piperidine, phenylpiperidine, benzylpiperidine, indoline, or perhydroindole; and V is oxygen or sulfur; provided that when R 1 is methyl and R 3 is
wherein R 4 is methyl and R 5 is phenyl, then R is other than 2-chlorophenyl or 2-methoxyphenyl; and when R 1 is hydrogen or ethyl and R 3 is
wherein R 4 is methyl and Rs is phenyl, then R is other than 3,4-dichlorophenyl; and herbicidal compositions and methods utilizing said compounds.
摘要:
Cyclic esters and amides possessing the polyalkyl piperidin-4-yl moiety are useful light stabilizers with synthetic polymer resins such as polyolefins and, in particular, polypropylene.
摘要:
A polyisocyanate composition comprising a reaction product of a stoichiometric excess of an organic polyisocyanate and : (i) a polymeric polyol having an average nominal hydroxyl functionality greater than 2 and an average hydroxyl equivalent weight of from about 500 to about 5000, and (ii) a polymeric polyamine having an average nominal primary and/or secondary amino functionality of from about 2 to about 3 and an average amine equivalent weight of from about 500 to about 5000, the polyol and the polyamine having glass transition temperatures below room temperature. The composition is especially useful in the production of elastomers by the RIM process.
摘要:
Monomeric and oligomeric derivatives of the diethyl ester of polyalkyl 1,4-dioxa-8-azaspiro-[4.5]-decane-2,3-dicarboxylic acid are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.
摘要:
A process for the preparation of a phosphorus complex corresponding to the following general formula: wherein R represents optionally substituted aryl, wherein the substitution may comprise at least one selected from nitro, chloro, fluoro, alkyl, fluoro-alkyl and alkoxy, or optionally substituted alkyl; characterised in that it comprises reacting phosphorus pentachloride and a phosphonic dichloride corresponding to the following general formula: RPOCl₂ wherein R is as defined above; in the presence of an inert solvent boiling at a temperature of from 120 to 150°C, which is capable of co-distilling a phosphorus oxychloride reaction product, and co-distilling a phosphorus oxychloride reaction product, the molar ratio of phosphorus pentachloride:phosphonic dichloride being from 0.1:1 to 10:1 is disclosed. There is further disclosed a process for chlorinating compounds containing a carbon atom bonded to a hetero-atom selected from oxygen, nitrogen and sulfur which comprises contacting the carbon hetero-atom containing compound with a chloro phosphorus complex corresponding to the following general formula: wherein R represents optionally substituted aryl or optionally substituted alkyl, so that the hetero-atom is replaced by at least one chlorine atom; the reaction may be extended to compounds containing the carbon to chlorine bond alpha to a carbon atom having at least one hydrogen atom, it may be further dehydrochlorinated by either heating to a temperature of from 50 to 300°C or by reaction with a selected base.
摘要:
The invention provides a series of novel substituted peptide derivatives of the formulae la, Ib and Ic (set out hereinafter) and pharmaceutically acceptable salts thereof, in which the radicals A, R 1 , R 2 and R 4 -R 9 have the meanings defined in the following specification. The compounds of formulae la, Ib, and Ic are inhbitors of human leukocytic elastase. The invention also provides pharmaceutical compositions containing a compound of formula la, Ib or Ic, or a pharmaceutically acceptable salt thereof and processes and intermediates for the manufacture of compounds of formulae la, Ib, and Ic.
摘要:
Compounds of the formula (wherein A represents a substituted 5- or 6-membered aryl or heteroaryl ring, Rb represents an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, heteroaryl or heteroarylalkyl, Rc represents hydrogen, alkyl or alkanoyl, n is 1 or 2 and X is C - H or N) and the salts thereof are useful as agents for binding to benzodiazepine receptors and possess anxiolytic activity.
摘要:
Proline derivatives of the formulae: wherein R 1 through R 11 have defined values, and acid- and base-addition salts thereof, and equilibrium addition compounds of the aldehyde group thereof; processes for their preparation; pharmaceutical compositions; and intermediates for preparing said proline derivatives. The proline derivatives are human leukocyte elastase inhibitors which are useful, for example, in treating pulmonary emphysema.