摘要:
Amino acids having masked amino groups react with amino acids having masked carboxyl groups to form peptide derivatives in good yields if the reaction medium contains an isonitrile. Isonitriles also are effective in causing condensation of amino acids having masked amino groups with compounds having active hydroxyl groups to the corresponding amino acid esters. The yields of the firstmentioned reaction are enhanced if the reaction mixture additionally contains one of the compounds having active hydroxyl groups. Both the peptide derivatives and the amino acid esters of the compounds having active hydroxyl groups are useful for peptide synthesis. The term ''''amino acid'''' herein embraces also oligopeptides having free amino and carboxyl groups unless specifically stated otherwise.
摘要:
NOVEL SULFUR DRIVATIVES OF ALKYLHYDROXYPHENYL MALEIMIDES WERE PREPARED. THE ALKYL-HYDROXYPHENYL MALEIMIDES WERE PREPARED BY FIRST REACTING AN ALKYLHYDROXYPHENYL AMINE WITH MALIEC ANHYDRIDE WITH SUBSEQUENT CYCLIZATION OF THE MALEAMIC ACID TO OBTAIN THE CORRESPONDING MALEIMIDE. THE SULFUR CONTAINING DERIVATIVES OF THE ALKYLHYDROXYPHENYL MALEIMIDE IS PREPARED BY REACTING THE CORRESPONDING MALEIMIDE WITH AN APPROPRIATE MERCAPTAN OR DIMERCAPTAN COMPOUND. THE COMPOUNDS OF THIS INVENTION ARE USEFUL AS STABILIZERS OF ORGANIC MATERIALS WHICH ARE SUBJECT TO OXIDATIVE AND THERMAL DETERIORATION.
摘要:
Long chain sulfonated amine compounds having amide or imide linkages are prepared by polymerizing a compound containing a polymerizable aziridine ring with sulfurous acid and reacting the resulting sulfur-containing polyalkylene polyamine with a long chain carboxylic acid, such as, a long chain mono-alkenyl succinic acid or anhydride. The products are useful in lubricating compositions.
WHEREIN R represents a hydrogen atom or an alkyl or alkyl-Oalkyl group, the alkyl groups containing one to four atoms of carbon, R1 represents a hydrogen atom or a methyl group, R2 represents a alkyl group containing one to four carbon atoms, or a cycloalkyl, aryl, aralkyl or succinimidoethyl group, Y represents a hydrogen or halogen atom or an alkoxy, nitro, cyano, or amino group, and X represents a monovalent anion and processes for their manufacture. These dyestuffs are particularly suitable for the coloration of fibers based on polymers or copolymers of acrylonitrile.
WHERE THE DANGLING VALENCE ON THE NITROGEN IS LINKED TO A SECOND CARBONYL, ALKYL, ARYL, CYCLOALKYL, HYDROGEN, ALKYLENE CARBON, OR ARYLENE CARBON AND R IS ALKYL, ARYL, OR CYCLOALKYL ARE INHIBITORS OF PREMATURE VULCANIZATION OF DIENE RUBBERS. COMPOUNDS OF THE FORMULA
R"''-S-S-N(-X'')-X
WHERE X IS CYCLOALKYL, ALKYL, ARYL, OR HYDROGEN AND X'' IS CYCLOALKYL, ALKYL, OR ARYL; OR X AND X'' TOGETHER WITH THE N ATOM FORM A HETEROCYCLIC AMINE; AND R"'' IS ARYL, ALKYL, OR CYCLOALKYL ARE ALSO INHIBITORS OF PREMATURE VULCANIZATION OF DIENE RUBBERS. A COMBINATION OF A VULCANIZATION ACCELERATOR AND AN INHIBITOR OF THIS INVENTION IS AN IMPROVED RUBBER ADDITIVE WHICH ALLOWS LONGER AND SAFER PROCESSING TIME FOR RUBBER.
摘要:
5-AZASPIRO(2.4)HEPTANE-4,6-DIONES USEFUL AS DIURETICS AND INTERMEDIATES FOR 5-AZASPIRO(2.4)HEPTANES ARE DESCRIBED. THE COMPOUNDS ARE PREPARED BY A SERIES OF REACTIONS STARTING FROM DIALKYL ITACONATES AND ITACONIC ANHYDRIDE WITH SUBSTITUTED DIAZOMETHANES.
摘要:
A NOVEL COMPOUND, N-(3'',5'' - DICHLOROPHENYL)ITACONIMIDE IS LESS PHYTO-TOXIC AS WELL AS HARMLESS TO MAMMALS AND HAS A PECULIARLY CONPICUOUS FUNGICIDAL ACTIVITY. THE NOVEL COMPOUND CAN READILY BE PREPARED BY DEHYDRATING N-(3'',5''-DICHLOROPHENYL)ITACONIC ACID MONOAMIDE. A FUNGICIDAL COMPOSITION CONTAINING N-(3'',5''-DICHLOROPHENYL)ITACONIMIDE AS AN ACTIVE INGREDIENTS HAVE PROMINET PREVENTIVE AND EXTERMINATIVE EFFECTS ON SUCH FUNGI AS PYRICULARIA ORYZAE CAV., COCHLIOBOLUS MIYABEANUS, PELLICULARIA SASAKII, SCLEROTINIA, ASPERGILUS NIGER AND THE LIKE.
WHEREIN R AND R'' ARE INDIVIDUALLY HALOGEN OR A LOWER ALKYL, X IS HALOGEN, A LOWER ALKYL, A LOWER ALKOXY OR NITRO, R" IS AN ALKYL HAVING 1 TO 10 CARBON ATOMS, AN ALKENYL, A GROUP OF THE FORMULA,
(Q-PHENYL)-(CH2)L-
WHEREIN Q IS HYDROGEN, HALOGEN, A LOWER ALKYL, A LOWER ALKOXY OR NITRO, AND L IS 1, 2, 3 OR 4, A GROUP OF THE FORMULA,
Z-PHENYL
WHEREIN Z IS HYDROGEN, HALOGEN, A LOWER ALKYL, A LOWER ALKOXY OR NITRO, A-FURFURYL OR A GROUP OF THE FORMULA, -CH2COOR'''''' WHEREIN R'''''' IS A LOWER ALKYL, N IS 0, 1, 2 OR 3, AND M IS 0, 1 OR 2, EXHIBITS AND EXTREMELY STRONG MICROBICIDAL ACTIVITY ON A MARKEDLY WIDE SCOPE OF MICROORGANISMS AND HAS A LOW TOXICITY. THE ABOVE-MENTIONED COMPOUND CAN BE PREPARED BY THE ADDITION REACTION OF AN N-PHENYLMALEIMIDE DERIVATIVE REPRESENTED BY THE FORMULA,
WHICH IS OBTAINED BY THE ABOVE-MENTIONED REACTION. ALTERNATIVELY, THE SAID NOVEL N-PHENYLSUCCINIMIDE DERIVATIVE CAN BE PREPARED BY DEHYDRATING AND RING-CLOSING A COMPOUND OF THE FORMULA,
(2-R,6-R'',(X)N-PHENYL)-NH-CO-CH(-S(=O)M-R")-CH2-COOH OR
摘要:
The disclosure describes reaction products useful as multipurpose fuel and motor oil additives which are reaction products of about equal molar portions of (1) an intermediate product produced by the condensation reaction between about equal molar portions of a compound selected from the group consisting of an alkenyl substituted succinic acid, an alkenyl substituted succinic anhydride and an alkenyl substituted succinimide or metal salt thereof, said compound having an average molecular weight from about 350 to about 1,000, and a second compound selected from the group consisting of ammonia gas, ammonium hydroxide and hydrazine, and (2) a third compound selected from the group consisting of basic metal compounds, compounds with displaceable halogens, acid halides, alkylene oxides, acid anhydrides, thio anhydrides, triethyl phosphite, boric acid and acrylonitrile. The intermediate product was itself found to be useful as a fuel and motor oil additive.
摘要:
Terpolymer compositions of relatively low molecular weight having aliphatic 1-olefins of from about eight to 30 carbon atoms, N-substituted maleimides and olefins having a sulfone interrupted chain. The compositions find use as detergents in fuels.