摘要:

In the commercial process for producing acetic anhydride and acid by the oxidation of acetaldehyde the observed concentrations of anhydride could not be accounted for till allowance was made for an important side reaction. The paper gives the differential equations based on the suggested mechanism; their solution is shown for certain limiting values of the reaction velocity coefficients, but in the general case numerical methods are required. Calculated and observed values are compared. Continuous operation of the process is also studied briefly.

ISSN:1923-4287    

DOI:10.1139/cjr41b-031

出版商:NRC Research Press    

年代:1941

数据来源: NRC

摘要:

Cis-transisomers were obtained by condensation of 3,3-diphenyl-1-hydrindone with benzaldehyde or itso- andm-methyl-,o- andp-methoxy-,o-ethoxy,o- andp-chloro-derivatives; and by conversion of the condensation products by treatment with acetic acid.3,3-Diphenyl-1-hydrindone was reduced to 3,3-diphenylhydrindene, and the condensation products of that ketone with the above mentioned aldehydes to derivatives of 3,3-diphenylhydrindene.The methods of preparation oftrans- andcis-3,3-diphenyl-2-benzylidene-1-hydrindone and of 3,3-diphenylhydrindene have been improved and the following compounds are described, as far as the authors are aware, for the first time:trans- andcis-3,3-diphenyl-2-(o-methylbenzylidene)-1-hydrindone,trans- andcis-3,3-diphenyl-2-(m-methylbenzylidene)-1-hydrindone,trans- andcis-3,3-diphenyl - 2 - (o-methoxybenzylidene) - 1 - hydrindone,trans- andcis- 3,3-diphenyl-2-(p-methoxybenzylidene)-1-hydrindone,trans- andcis-3,3-diphenyl-2-(o-ethoxybenzylidene)-1-hydrindone,trans- andcis-3,3-diphenyl-2-(o-chlorobenzylidene)-1-hydrindone,trans- andcis-3,3-diphenyl-2-(p-chlorobenzylidene)-1-hydrindone, 3,3- diphenyl - 2-benzyl - hydrindene, 3,3-diphenyl - 2 - (o-methylbenzyl)-hydrindene, 3,3-diphenyl-2-(m-methylbenzyl)-hydrindene, 3,3-diphenyl-2-(o-methoxybenzyl)-hydrindene, 3,3-diphenyl-2-(p-methoxybenzyl)-hydrindene, 3,3-diphenyl-2- (o-ethoxybenzyl) - hydrindene, 3,3-diphenyl-2-(o-chlorobenzyl)-hydrindene,3,3-diphenyl-2-(p-chlorobenzyl)-hydrindene.

ISSN:1923-4287    

DOI:10.1139/cjr41b-032

出版商:NRC Research Press    

年代:1941

数据来源: NRC