The reaction of equimolar amounts of NBS with salicylic acid in carbon tetrachloride was found to give tribromophenol, 4-bromo- and 4,6-(not 4,5)-dibromo-salicylic acids, while the same reaction carried out in dioxane yielded only tribromophenol and 4-bromosalicylic acid and addition of ...
To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option.doi:10.1002/chin.199605116D.LITKEIV.P.KHILYAA.L.TOKESHSH.ANTUSHJohn Wiley & Sons, Ltd.ChemInform...
aRing contraction was effected by reaction with trifluoroacetic acid and N-bromosuccinimide followed by aqueous sodium bicarbonate and silver tetrafluoroborate to give vinflunine in 88% yield. 圆环收缩由含水小苏打和银tetrafluoroborate跟随的反应与trifluoroacetic酸和N-bromosuccinimide在88%出产量影响给vinflunine。
REACTION OF 8-AZA-D-HOMOGONA-1,3,5(10),13-TETRAENE- 12,17a-DIONES WITH N-BROMOSUCCINIMIDE O. V. Gulyakevich, A. L. Mikhal'chuk, and A. A. Akhrem The halogen derivatives of 8-azasteroids are of interest as intermediates for planned transformations. We have shown earlier [1] that t...
Simple and Efficient System for the α-Bromination of a β-Ketoester by Using N-Bromosuccinimide in the Presence of Silica-Supported NaHCO3 as the Heteroge... Selective and efficient α-bromination of β-ketoesters and cyclic and acyclic ketones is achieved by reaction with N-bromosuccinimide (...
It was of importance to know what action N -bromosuccinimide, which imitates nature in its reaction with phytoene, would have on lycopersene under similar conditions.doi:10.1038/199491a0GOODWIN, T. WTHOMAS, D. MNature Publishing Group UKNature...
(9-E)-9-Deoxo-9-hydroximinoerythromycin A (2) was reacted with N-bromosuccinimide in aqueous sodium bicarbonate to give 9-deoxo-11-deoxy-9,11-epoxy-9-nitroso-3′-des-N-methylerythromycin A (5) which was converted into 3′-des-N-methyl-9-deoxo-9-hydroximinoerythromycin A (7) with ...
To circumvent this problem, 115 was converted to bromo ether 117 by reaction with N-bromosuccinimide (NBS), which followed deprotection of the tert-butyl ether. Stereoselective epoxidation of the resulting 118 was achieved using mCPBA. Treatment of 119 with sodium metal in the presence of ...
内容提示: Wohl–Ziegler reaction The Wohl–Ziegler reaction is the reaction of an allylic or benzylic substrate with N-bromosuccinimide (NBS) under radical initiating conditions to provide the cor-responding allylic or benzylic bromide. Conditions used to promote the radical reaction are typically ...
ChemInform Abstract: REACTION OF VINYL KETOXIMES WITH N‐BROMOSUCCINIMIDE. SYNTHESIS OF ISOXAZOLES AND 4‐BROMOISOXAZOLINESisoxazole derivativesDie Reaktion der unges