53290-48-5Relevant academic research and scientific papers
Photolysis of 2-Amino-2'-azidobiphenyls: Formal Formation of Internally Trapped Didehydroazepines
Murata, Shigeru,Tsuji, Hiroshi,Tomioka, Hideo
, p. 895 - 897 (2007/10/02)
Photolysis of 2-amino-2'-azidobiphenyls in diethylamine gave 4,10-dihydroazepinoindoles (7), the structure of which corresponded to the didehydroazepines formally trapped with an internal amino group.However, the yields of 7 were considered low, which was due to the significant intramolecular interaction of the photolytically generated nitrene with an amino group, to afford benzocinnoline as a final product.
X-Ray Structural Studies of Stereoisomeric Bi(14H-dibenzo-diazepinoisoindol-14-ylidene)s obtained from the Reaction of 2,2'-Diaminobiphenyl with o-Phthalaldehyde
Hall, D. Muriel,Huaun-Yong, Hwang,Insole, Joan M.,Walker, Nigel P. C.
, p. 1763 - 1770 (2007/10/02)
Reaction of 2,2'-diaminobiphenyl with o-phthalaldehyde yielded a number of products including two bi-(14H-dibenzodiazepinoisoindol-14-ylidene)s, (A) and (B); each was converted on heating into a third isomer (D).The crystal structure of (A), and that of (D), as the solvated trifluoroacetate salt were determined; (A), previously thought to be the trans-isomer, is in fact the cis-(R,R)/(S,S)-isomer (1a), a racemic compound, and (D) is the meso trans-(R,S)-isomer (2b).Compound (B) is considered to be the racemic trans-(R,R)/(S,S)-isomer (2a).The crystal structures of (A) and (D) and the 13C n.m.r. and u.v. spectra of all three isomers are discussed.
