the temperature of a photochemical reaction liquid is controlled to between 23 and 30 DEG C, and a photochemical reaction mixture containing high proportion of the cis-lycopene isomer is prepared; the photochemical reaction mixture containing high proportion of the cis-lycopene isomer is evaporated to...
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Then the compound shown by formula III is brought into contact with a reducing agent such as aluminum isopropoxide in an molecular weight solvent at about 30-100 deg.C and then subjected to reduction and lactone formation reaction by treatment with an aqueous solution of an acid to give a ...
papers202001 Oct30Reinforcement learning IITMM 13212001 NovNeural computationPapers; RN 1901222001 Nov06Combining classifiers (WM,bagging)TMM 7232001 Nov08BoostingTMM 9; papers242001 Nov13Introduction to geneticalgorithmsTMM 9; DEG252001 Nov15Genetic programmingTMM 9; JK; papers262001 Nov20IBL, k-...
Reaction of N-carbamoyl-delta4-cis-cyclohexene-1,2-dicarboximide with acids, bases or nucleophilic reagents, such as C1-4 alcohols, primary and secondary amines, below 30 deg.C or alternatively in the presence of a weak base, such as pyridine, above 70 deg.C. 7-(diphenyl-methylene)-5-...
added with stirring at 0 Deg to 0.020 mol suitable aldehyde and 50 cc. 1:1 C6H6-petr. ether, and stirred 1 h. gave the corresponding cis,trans-RCH:CHR' (R, R', % yield of cis,trans-mixt., and % cis isomer content of the mixt. given): Me, Am, 66, 91; Me, trans-PhCH:...
Reaction of N-carbamoyl-delta4-cis-cyclohexene-1,2-dicarboximide with acids, bases or nucleophilic reagents, such as C1-4 alcohols, primary and secondary amines, below 30 deg.C or alternatively in the presence of a weak base, such as pyridine, above 70 deg.C. 7-(diphenyl-methylene)-5-...
The investigation of the dielectric and pyroelectric responses were carried out in the temperature range of 30-100 deg C. The results suggest that the film retains the ferroelectric properties of the bulk crystal with magnitudes close to those of single crystal values at room temperature. However,...
The synthesis process is conducted according to the steps as follows: the cis-1,4-butylene diol, dihydropyran and a solvent are added in sequence, and then an aqueous solution of inorganic salt is added as a catalyst; the temperature is raised to 30 DEG C and the reaction is conducted ...
DEG C and about +30 DEG C for a time period of between about 0.25 hour and about 6.0 hours; (c) adding excess water to effect hydrolysis, and stirring for a time period of between about 0.5 hour and about 8.0 hours, at a temperature of between about 25 DEG C and about 100 DEG C...