Directed Markovnikov hydroarylation and hydroalkenylation of alkenes under nickel catalysis
作者:Zi-Qi Li、Omar Apolinar、Ruohan Deng、Keary M. Engle
DOI:10.1039/d1sc03121j
日期:——
Native Lewis basic functional groups enable the nickel-catalyzed Markovnikov-selective hydroarylation and hydroalkenylation of unactivated alkenes with organoboron reagents.
?-Cleavage of Bis(homoallylic) Potassium Alkoxides. Two-Step Preparation of Propenyl Ketones from Carboxylic Esters. Synthesis ofar-Turmerone, ?-Damascone, ?-Damascone, and ?-Damascenone
作者:Roger L. Snowden、Simon M. Linder、Bernard L. Muller、Karl H. Schulte-Elte
DOI:10.1002/hlca.19870700721
日期:1987.11.4
The transformation of 36 bis(homoallylic) alcohols VII to alkenones IX and Xvia β-cleavage of their potassiumalkoxides VIIa in HMPA has been investigated (cf. Scheme 2). These studies have established an order of β-cleavage for 2-propenyl, 1-methyl-2propenyl, 2-methyl-2-propenyl, 1,1-dimethyl-2propenyl, and benzyl groups in alkoxides 49a–56a and have allowed a comparison between the β-cleavege reaction
Palladium-catalyzed cross coupling of allyl halides with organotin reagents: a method of joining highly functionalized partners regioselectively and stereospecifically
作者:Forrest K. Sheffy、J. P. Godschalx、J. K. Stille
DOI:10.1021/ja00329a032
日期:1984.8
La reaction catalysee par le palladium d'halogenures allyliques avec des reactifs aryl- et vinylstannanes donne des produits de copulation croisee. En presence de monoxyde de carbone, des cetones sont obtenues, resultant d'une copulation croisee accompagnee d'une insertion de CO. La reaction est douce et s'effectue meme en presence de diverses fonctions (OH, OR, CN, CO 2 R, CHO) soit sur le chlorure
La 反应催化剂 par le palladium d'halogenures allyliques avec des reactifs aryl- etvinylstannanes donne des produits de copulation croisee。En存在 de monooxyde de carbone, des cetones sont obtenues, result d'une copulation croisee accompagnee d'une insert de CO. La反应 est douce et s'effectue meme en 存在 de differents fonctions (OH, OR, CN, CO 2 R , CHO) soit sur le le chlorure allylique soit sur le stannane
Rhodium Enalcarbenoids: Direct Synthesis of Indoles by Rhodium(II)-Catalyzed [4+2] Benzannulation of Pyrroles
electrophilic rhodium enalcarbenoid which results from rhodium(II)‐catalyzeddecomposition of a new class of enaldiazo compounds. The synthetic utility of these enalcarbenoids has been successfully demonstrated in the first transition‐metal‐catalyzed [4+2] benzannulation of pyrroles, thus leading to substituted indoles. The new benzannulation has been applied to the efficientsynthesis of the natural