De novo synthesis of functionalized 1,3-enynes and extended conjugated molecular systems
作者:Maddali L. N. Rao、Priyabrata Dasgupta、Venneti N. Murty
DOI:10.1039/c5ra01544h
日期:——
Pd-catalyzed coupling of 1,3-dienyldibromides with triarylbismuths was demonstrated for the synthesis of a diverse range of 1,3-enynes.
钯催化的1,3-二烯基二溴化物与三芳基双锑的偶联被证明可用于合成多种1,3-炔烃。
Thiourea and benzamide compounds, compositions and methods of treating or preventing inflammatory diseases and atherosclerosis
申请人:Warner-Lambert Company
公开号:US06268387B1
公开(公告)日:2001-07-31
The present invention provides compounds of formula (I). The present invention also provides methods of treating or preventing inflammation or atherosclerosis, and a pharmaceutical composition that contains a compound of formula (I).
Pd-Catalyzed Threefold Arylation of Baylis-Hillman Bromides and Acetates with Triarylbismuth Reagents
作者:Maddali L. N. Rao、Somnath Giri
DOI:10.1002/ejoc.201200543
日期:2012.8
alkyl 2-benzylacrylates and 2-benzylacrylonitriles were synthesized by means of atom-economic cross-couplings of Baylis–Hillmanbromides or acetates with BiAr3 under palladium-catalyzed conditions. These reactions, involving threefold aryl couplings using BiAr3 reagents with bromides and acetates, are fast and are completed in 1–2 h with high product yields.
Atom-economic threefold cross-couplings of triarylbismuth reagents with 2-halobenzaldehydes and pot-economic in situ Wittig functionalizations with phosphonium salts
作者:Maddali L. N. Rao、Ritesh J. Dhanorkar
DOI:10.1039/c4ra13348j
日期:——
In this paper we report an efficient pot-economic methodology for the synthesis of ortho-olefinated biaryls. This has been achieved through an atom-economic threefold cross-coupling of triarylbismuth reagents with 2-halobenzaldehydes followed by pot-economic in situ Wittig olefination. The overall process is a pot-economic straightforward synthesis of ortho-olefinated biaryls from 2-halobenzaldehydes, triarylbismuth reagents and phosphonium salts. This pot-economic approach was applied to the formal synthesis of medicinally important Eupomatilone-6.
Cross-coupling reactivity of 1,1-dichloroalkenes under palladium catalysis: domino synthesis of diarylalkynes
作者:L. N. Rao Maddali、Suresh Meka
DOI:10.1039/c7nj05107g
日期:——
An efficientsynthesis of diarylalkynes was achieved from the domino cross-coupling reaction of 1,1-dichloroalkenes with triarylbismuth reagents under palladium-catalyzed conditions. Under the established palladium protocol, 1,1-dichloroalkenes demonstrated hitherto unknown remarkable cross-coupling reactivity with organometallic triarylbismuth reagents to furnish functionalized diarylalkynes.