Syntheses with organoboranes. IX. Vinyl- and 1-alkenyldichloroboranes as ethylene and 1-alkene equivalents for the Diels–Alder reaction
作者:Marek Zaidlewicz、Jacek R Binkul、Wojciech Sokół
DOI:10.1016/s0022-328x(98)01175-9
日期:1999.5
Vinyl- and 1-alkenyldichloroboranes were used as dienophiles for the Diels–Alderreaction with representative aliphatic and cyclic 1,3-dienes. The organoborane adducts were transformed into the corresponding olefins either by protonolysis or by oxidation–mesylation–reduction. Direct protonolysis of the adducts gave in most cases mixtures of olefins whereas the reduction of mesylates with lithium triethylborohydride
Beiträge zur chemie des bors XLI. Darstellung von organylborhalogeniden
作者:Heinrich Nöth、Heinrich Vahrenkamp
DOI:10.1016/0022-328x(68)80063-4
日期:——
The preparation of organohaloboranes R3−nBXn (R = CH3, C2H5, C6H5; X = F, Cl, Br. I) by two convenient procedures is described. These are based on the action of boron halides on tetraorganostannanes and dialkylamino-organoboranes respectively.
描述了通过两种方便的方法制备有机卤代呋喃酮R 3- n BX n(R = CH 3,C 2 H 5,C 6 H 5; X = F,Cl,Br。I)。这些是基于卤化硼分别对四有机锡烷和二烷基氨基-有机硼烷的作用。
Optisch aktive vinylboronate
作者:Ibrahim Mikhail、Dieter Kaufmann
DOI:10.1016/0022-328x(90)87002-u
日期:1990.11
The comparative synthesis of optical active vinylboronates starting with (−)-2,3-pinanediol (5) or (+)-diethyltartrate (7) and dichlorovinylborane (4a), vinylboronic acid (4c), and dibutyl vinylboronate (4d) is described. A new method for the synthesis of dihalovinylboranes 4a, 4b is presented.