J. Am. Chem. Soc. , 1990, 112 (26), ... Joseph M. O'Connor, Adam Closson, Kristin Hiibner, Richard Merwin, and Peter Gantzel , Dean M. Roddick ... Jam...
Aug 17, 1990 - carboxylation. Alkylacyloxy radical decarboxylations, while not especially well studied, apparently are at least an order of mag- nitude slower ...
Aug 31, 1990 - 2.8x10®. R. 1. \. M fi. H. IS. 4.4x10® (5.0%). 2.3x10®. 6.0 x 10® (0.7%). 2.2x10®. 7.1 x 104 (0.08%). 2.5x10®. 2.0 X 10 (0.02%). (not determined).
A new 4C + 2C annelation reaction based on tandem Michael-Claisen condensation. 2. Synthesis of aristolone and fukinone. C. V. C. Prasad, and Tak Hang ...
Jun 5, 1998 - The Transient Titanocene(II): Direct Synthesis from Solvated Titanium(II) Chloride and Cyclopentadienylsodium and Ensuing Interception with Diphenylacetylene as 1,1-Bis(cyclopentadienyl)-2,3,4,5-tetraphenyltitanacyclopentadiene. John J.
John J. Eisch , Adetenu A. Adeosun , John M. Birmingham. European Journal of Inorganic Chemistry 2007 2007 (10.1002/ejic.v2007:1), 39-43 ...
Apparently this type of transformation cannot be transposed to electron-rich alkynes. ... in Scheme 3, the synthesis of P-phenyl derivatives can be carried out without ..... 1-Phenylphosphirenes are purified by fast column chromatography using ...
May 2, 1986 - Further, the tandem Michael-Claisen annelation reaction can be controlled to give ... intramolecular Claisen condensation of 2 under basic.
Jan 1, 1987 - A new 4C + 2C annelation reaction based on tandem Michael-Claisen condensation. 1. General scope. Tak Hang Chan, C. V. C. Prasad.
A new 4C + 2C annelation reaction based on tandem Michael-Claisen condensation. 1. General scope. Tak Hang Chan, and C. V. C. Prasad. J. Org. Chem.
We have now carried out crossover experiments in which the reaction of trimethyl phosphite with a mix ture of differently substituted chloro- and bromoace-.
J. Am. Chem. SOC.1990, 112, 9663-9665
phenylcyclopropy1)carbinyl radical (11) was prepared by standard methods from acid 1O.u Reaction of 8 (Scheme I) in the presence of thiophenol gave only 4-phenyl- 1 -butene (14). However, reactions of 8 in toluene in the presence of PhSeH gave acid 10 and small amounts of trans-2-methyl- 1 -phenylcyclopropane (13) in addition to 14.20 3-Phenyl-l-butene, the ultimate product from cleavage of the CI-C3 bond in radical 11, was not detected to the limit of our precision (
