76119-08-9Relevant articles and documents
Pd(O)-PhCOOH catalyzed addition of oxygen pronucleophiles to allenes and internal alkynes
Patil, Nitin T.,Pahadi, Nirmal K.,Yamamoto, Yoshinori
, p. 569 - 573 (2005)
We have developed a catalytic system that enables the addition of alcohols to allenes using a combination of 5 mol% Pd(PPh3)4 and 10 mol% benzoic acid. Likewise, the addition reaction of carboxylic acids to alkynes is described. In all cases the reaction proceeded well, giving the corresponding allylation products in good-to-high yields with high regio- and stereoselectivities.
Tailoring flavins for visible light photocatalysis: organocatalytic [2+2] cycloadditions mediated by a flavin derivative and visible light
Mojr, Viktor,Svobodová, Eva,Straková, Karolína,Nevesely, Tomá?,Chudoba, Josef,Dvo?áková, Hana,Cibulka, Radek
supporting information, p. 12036 - 12039 (2015/07/28)
A new application of flavin derivatives in visible light photocatalysis was found. 1-Butyl-7,8-dimethoxy-3-methylalloxazine, when irradiated by visible light, was shown to allow an efficient cyclobutane ring formation via an intramolecular [2+2] cycloaddition of both styrene dienes, considered as electron-rich substrates, and electron-poor bis(arylenones), presumably proceeding via an energy transfer mechanism.
Base Catalysed Rearrangements involving Ylide Intermediates. Part 4. Sigmatropic Rearrangements of 4-Dimethylaminobutenes and Sigmatropic Rearrangements of 3-Dimethylaminohexa-1,5-dienes
Jemison, Robert W.,Ollis, W. David,Sutherland, Ian O.,Tannock, James
, p. 1462 - 1472 (2007/10/02)
The sighmatropic rearrangement (11) -> (12) of the 9-dimethylamino-9-(1-phenylallyl)fluorene is a stereoselective process (84:16) at 170 deg C.Analogous rearrangements (16) -> (17) of the fluorene derivatives show that the reaction rate is increased by electron donating 9-substituents in the order O- > NMe2 > OMe.Similar substituent effects are observed for the Cope rearrangement (25) -> (26) of hexa-1,5-dienes. 4-Phenyl, 4,4-dimethyl, and 3-dimethylamino substituents are particularly effective in accelerating the rate of the rearrangement (25) -> (26).