42291-06-5Relevant articles and documents
Process for producing optically active 3,3,3-Trifluoro-2-Hydroxy-2-Methylpropionic acid, and salt thereof
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, (2008/06/13)
There are disclosed are a diastereomer salt of formula (1): a process for producing the same, a process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid of formula (2′): a novel optically active amine compound of formula (4): a novel optically active amine compound of formula (8): an imine compound of formula (7) or (11):
Regiochemistry on Photoamination of Stilbene Derivatives with Ammonia via Electron Transfer
Yasuda, Masahide,Isami, Toshihiro,Kubo, Jun-ichi,Mizutani, Manabu,Yamashita, Toshiaki,et al.
, p. 1351 - 1354 (2007/10/02)
The regiochemistry of photoamination of 1,2-diarylethene (1) with ammonia in the presence of p-dicyanobenzene (DCNB) has been investigated.The photoamination of stilbene and p,p'-dimethoxystilbene gave 1-amino-1,2-diphenylethane and 1-amino-1,2-bis(p-methoxyphenyl)ethane, respectively.The photoamination of unsymmetric 1-aryl-2-phenylethene having an alkoxy group on the para position occurred selectively to give 1-amino-2-aryl-1-phenylethane.On the other hand, the photoamination of 1-aryl-2-phenylethene having a methyl and chloro group on the para position or methoxy group on the meta and ortho positions gave both 1-amino-2-aryl-1-phenylethane and 1-amino-1-aryl-2-phenylethane.The regiochemistry is related with the distribution of positive charge in the cation radicals of 1 generated from photochemical electron transfer to DCNB.