51705-89-6Relevant academic research and scientific papers
Photoisomerization of Oxime Ethers and Efficiency of Triplet Formation via Exciplexes
Takeda, Yoshihiko,Misawa, Hiroaki,Sakuragi, Hirochika,Tokumaru, Katsumi
, p. 2213 - 2218 (1989)
9,10-Dicyanoanthracene(DCA)-sensitized isomerization of (E)- and (Z)-isomers of an oxime ether of 2-acetylnaphthalene (E-1 and Z-1, respectively) was investigated in benzene by means of steady irradiation and laser flash photolysis.The excited singlet DCA was effectively quenched by E-1 and Z-1 to afford exciplexes, decay of which gave DCA triplets or 1 triplets.The triplet state of 1 was proposed as the isomerization intermediate and the formation efficiency of 1 triplets was estimated from isomerization quantum yields.
Catalytic Asymmetric Carbene Transfer Reactions of Diazo Oxime Ethers with Olefins and Their Synthetic Applications
Da Ho, Linh,Otog, Nansalmaa,Fujisawa, Ikuhide,Iwasa, Seiji
supporting information, p. 7470 - 7474 (2019/10/02)
The first catalytic asymmetric cyclopropanation of diazo oxime ethers with olefins was developed. In the presence of a Ru(II)-Pheox catalyst, various optically active cyclopropyl oxime derivatives were obtained in high yields (up to 99%) with high enantioselectivities (up to 98% ee). Furthermore, optically active cyclopropyl oxime ethers could be successfully converted into the corresponding cyclopropyl methylamine derivatives via metal hydride and Grignard reagent mediated Beckmann rearrangement, which are potential candidates for the assessment of biological and pharmaceutical activities.
