Organoselenium chemistry. 4. Deprotonations with potassium diisopropylamide-lithium tert-butoxide. Alkylation of 1-(phenylseleno)alkenes and bis(phenylseleno) acetals
The addition of selenophenol to mono - and di-substituted unactivated acetylenes have been investigated. At room temperature the vinylicselenides obtained were predominantly of the Z configuration; at 120°C Z/E mixtures were produced. Vinylicselenides with the E configuration were obtained by reduction of the corresponding selenoacetylenes with lithium aluminium hydride.
Hypervalent Iodine in Synthesis 44: Stereoselective Synthesis of Vinylic Selenides by the Reaction of Sodium Selenolates with Vinyl (Phenyl) Iodonium Salts
作者:Jie Yan、Zhen-Chu Chen
DOI:10.1080/00397910008087118
日期:2000.3
Abstract Vinylic selenides have been prepared stereoselectively by the reaction of sodium selenolates with vinyl(phenyl)iodonium salts with retention or inversion of the configurations.
摘要 通过硒酸钠与乙烯基(苯基)碘鎓盐反应,保留或反转构型,可以立体选择性地制备乙烯基硒化物。
HYDROALUMINATION AND BROMINATION OF 1-(PHENYL-SELENYL)-1-ALKYNES
作者:Mohammed I. Al-Hassan
DOI:10.1081/scc-100105675
日期:2001.1
Hydroaluminuation and bromination of 1-(phenylselenyl)1-alkynes were studied and compared with the rate of hydroalumination and bromination of the corresponding alkynylsilanes.
Stereoselective synthesis of E- and Z-1-phenylselenoalkenes
作者:Stanley Raucher、Michael R. Hansen、Mark A. Colter
DOI:10.1021/jo00419a041
日期:1978.12
Stereoselective synthesis of (E)-1-iodo-1-selenoalkenes via hydroalumination–iodination of 1-alkynyl selenides
作者:Carlos Pérez-Balado、Fabio Lucaccioni、István E. Markó
DOI:10.1016/j.tetlet.2005.05.052
日期:2005.7
syn-Hydroalumination of 2,4,6-triisopropylphenylselanyl-1-alkynes 22 with DIBAL-H, followed by AN exchange with I-2, afforded selectively the corresponding (E)-1-iodo-1-selenoalkenes in good yields. The sterically hindered 2,4,6-triisopropylphenyl group proved to be mandatory and prevented the formation of undesired by-products. (c) 2005 Elsevier Ltd. All rights reserved.