期刊
ORGANIC LETTERS
卷 19, 期 10, 页码 2710-2713出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.7b01055
关键词
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资金
- JSPS [26410108, 26293001, 16J03988]
- JST ACT-C [JPMJCR12YM]
- Grants-in-Aid for Scientific Research [16J03988, 26410108, 26293001] Funding Source: KAKEN
Arylative carboxylation of allenes proceeded in an intramolecular manner to afford the corresponding beta,gamma-unsaturated carboxylic adds in high yields using PdCl2/PAr3 (Ar = C6H4-p-CF3) and ZnEt2 under 1 atm of CO2. The intermediate of the cyclization/carboxylation sequence is thought to be a nucleophilic n(1)-allylethylpalladium, which reacts with CO2 at the gamma-position of palladium. The products obtained could be efficiently converted into 3-substituted indole-2-carboxylate derivatives. One-pot synthesis of strychnocarpine, a beta-carboline alkaloid, from the carboxylated product was also demonstrated.
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