62982-11-0Relevant academic research and scientific papers
Palladium-Catalyzed Asymmetric Hydrosulfonylation of 1,3-Dienes with Sulfonyl Hydrazides
Li, Ming-Ming,Cheng, Lei,Xiao, Li-Jun,Xie, Jian-Hua,Zhou, Qi-Lin
supporting information, p. 2948 - 2951 (2020/12/15)
A highly enantio- and regioselective hydrosulfonylation of 1,3-dienes with sulfonyl hydrazides has been realized by using a palladium catalyst containing a monodentate chiral spiro phosphoramidite ligand. The reaction provided an efficient approach to synthetically useful chiral allylic sulfones. Mechanistic studies suggest that the reaction proceeds through the formation of an allyl hydrazine intermediate and subsequent rearrangement to the chiral allylic sulfone product. The transformation of the allyl hydrazine intermediate to the product is the enantioselectivity-determining step.
Palladium-Catalyzed Synthesis of Indolines from Aroyloxycarbamates through a Tandem Decarboxylative Amination/Heck/Annulation Reaction
Wang, Zheng,Li, Peihe,Fu, Hui,Dai, Qipu,Hu, Changwen
, p. 192 - 200 (2018/11/23)
A novel synthesis of functionalized indolines via a Pd-catalyzed tandem decarboxylative amination/Heck/annulation reaction has been developed. This process features operational simplicity, mild conditions, and the use of a readily available and environmentally friendly starting material, namely carboxylic acid. Furthermore, the reaction shows good functional group tolerance and chemical selectivity. (Figure presented.).
Regioselective semihydrogenation of dienes
Graham, Thomas J. A.,Poole, Thomas H.,Reese, Charles N.,Goess, Brian C.
experimental part, p. 4132 - 4138 (2011/07/07)
A one-pot, three-step strategy for the regioselective semihydrogenation of dienes is described. This procedure uses 9-BBN-H as a temporary protective group for alkenes. Yields range from 55% to 95%, and the reaction is tolerant of a variety of common functional groups. Additionally, the final elimination step of the sequence can be replaced with a peroxide-mediated alkylborane oxidation, generating regioselectively semihydrogenated product alcohols.
Photochemistry of Arylbutadienes. Part 2. Preparation and Photochemistry of 1-(Substituted-aryl)butadienes. A Ground-state Substituent Effect on an Excited-state Reaction
Baldry, Peter J.
, p. 805 - 808 (2007/10/02)
Yields and quantum yields are reported for the photoaddition of methanol to 1-phenylbutadiene and eight substituted 1-phenylbutadienes.For allyl and homoallyl products log Φ correlates more satisfactorily with ground-state substituent constants than with excited-state constants; for cyclopropylmethyl products, no correlation is observed with either set of constants.
