Solid-phase synthesis of heterocycles via palladium-catalyzed annulation
作者:Yao Wang、Tai-Nang Huang
DOI:10.1016/s0040-4039(98)02337-5
日期:1998.12
Solid-phase linked o-iodoanilines (4) and o-iodophenol (9) reacted with 1,3- and 1,4-dienes in the presence of palladium acetate to generate highly substituted indolines, tetrahydroquinolines, hydrobenzofurans and hydrobenzopyrans, which provided an efficient way for making heterocyclic molecule libraries.
Chemistry of Dienyl Anions. I. Crystalline Dienyl Anions by Direct Reaction of Conjugated and Non-conjugated Dienes with Alkali Metals in the Presence of Et<sub>3</sub>N
Series of acyclic and cyclic dienyl anions were prepared from both conjugated and non-conjugated dienes by direct metalation with alkalimetals (Li, Na, K, Rb, and Cs) in tetrahydrofuran in the pre...
CATALYTIC DEHYDRATION OF ALCOHOLS AND ETHERS OVER A TERNARY MIXED OXIDE
申请人:Norman David William
公开号:US20130072696A1
公开(公告)日:2013-03-21
A ternary V—Ti—P mixed oxide is shown to catalytically dehydrate 2-methyl-tetrahydrofuran in high conversion to give piperylene, in good yield. Volatile products collected from this reaction contain piperylene in concentrations as high as 80 percent by weight. Dehydration of glycerol to acrolein in high conversion and moderate selectivity is also demonstrated. The catalyst is also shown to dehydrate other alcohols and ether substrates. The catalyst is resistant to deactivation and maintains activity between runs.
Regioselective Alkene Carbon−Carbon Bond Cleavage to Aldehydes and Chemoselective Alcohol Oxidation of Allylic Alcohols with Hydrogen Peroxide Catalyzed by [<i>cis-</i>Ru(II)(dmp)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<sup>2+</sup> (dmp = 2,9-dimethylphenanthroline)
作者:Vladimir Kogan、Miriam M. Quintal、Ronny Neumann
DOI:10.1021/ol052025e
日期:2005.10.1
to the corresponding aldehydes as an alternative to ozonolysis. Secondary alkenes were much less reactive, leading to regioselective oxidation of substrates such as 4-vinylcyclohexene and 7-methyl-1,6-octadiene at the terminal position. Primary allylic alcohols were chemoselectively oxidized to the corresponding allylic aldehydes, e.g., geraniol to citral.
APPLICATION OF HYDROALUMINATION REACTIONS IN ORGANIC SYNTHESES. A CONVENIENT ROUTE TO TERMINAL ALLENES FROM 1-OLEFINS
作者:Fumie Sato、Kaoru Oguro、Masao Sato
DOI:10.1246/cl.1978.805
日期:1978.7.5
Hydroalumination of 1-olefins with lithiumaluminumhydride followed by treatment with 3-bromo-1-propyne in the presence of a catalytic amount of copper(I) chloride resulted in coupling. This new d...