4842-43-7Relevant articles and documents
Stereocontrol of Paterno-Buchi photocycloadditions
Fleming, Steven A.,Gao, J. Jerry
, p. 5407 - 5410 (1997)
Diphenyloxetane was synthesized from photocycloaddition of benzaldehyde and styrene. The oxetane products, 2,3 trans and 2,3 cis isomers, were observed in a 3:1 ratio. Irradiation of 1-phenylpropene and trimethylsilyl cinnamyl ether under the same conditions also gave oxetanes. The silyl group resulted in high stereoselectivity for the oxetane formation.
Manganese(I) catalyzed cross-coupling of secondary allylic alcohols and primary alcohols
Pandia, Biplab Keshari,Pattanaik, Sandip,Gunanathan, Chidambaram
, (2021/11/01)
Cross-coupling of alcohols to value-added products by using sustainable catalytic reactions has gained attention in recent years. Isomerization of secondary allylic alcohol to the corresponding enolizable ketone is an atom economical and known transformation. Herein, a selective cross-coupling of secondary allylic alcohol and primary alcohol is reported to afford the corresponding α-alkenyl or alkylation products. These catalytic protocols proceed via acceptorless dehydrogenative coupling (ADC) or borrowing hydrogen (BH) strategies, which liberates water and/or hydrogen as the only byproducts. Highly abundant manganese-based pincer catalysts catalyze the reactions.
Neutral-eosin Y-catalyzed regioselective hydroacylation of aryl alkenes under visible-light irradiation
Liu, Haiwang,Xue, Fei,Wang, Mu,Tang, Xinxin,Wu, Jie
supporting information, p. 406 - 410 (2020/12/30)
Styrene derivatives were hydroacylated with exclusive anti-Markovnikov selectivity by using neutral eosin Y as a direct hydrogen-atom-transfer (HAT) catalyst under visible-light irradiation. Aldehydes and styrenes with various substituents were tolerated (>20 examples), giving the corresponding products in moderate to high yields. The key acyl radical intermediate was generated from a direct HAT process induced by photoexcited eosin Y. Subsequent addition to styrenes and a reverse HAT process generated the ketone products.