Intermediate 6-cyanoindole was obtained from 4-methylbenzonitrile as a raw material via nitration with the mixed acid, condensation with N,N-dimethylformamide dimethyl acetal and cyclic reaction with Raney nickel-hydr...Intermediate 6-cyanoindole was obtained from 4-methylbenzonitrile as a raw material via nitration with the mixed acid, condensation with N,N-dimethylformamide dimethyl acetal and cyclic reaction with Raney nickel-hydrazine. 6-Cyanoindole-3-carboxyaldehyde was synthesized via the Vilsmeier reaction of 6-(cyanoindole) with N,N-(diemthylformamide) and phosphorus oxychloride. The structure of the target compound was confirmed by 1H NMR, IR and elemental analysis. The total yield was 57% and the purity of the final (product) reached 99.4%.展开更多
文摘Intermediate 6-cyanoindole was obtained from 4-methylbenzonitrile as a raw material via nitration with the mixed acid, condensation with N,N-dimethylformamide dimethyl acetal and cyclic reaction with Raney nickel-hydrazine. 6-Cyanoindole-3-carboxyaldehyde was synthesized via the Vilsmeier reaction of 6-(cyanoindole) with N,N-(diemthylformamide) and phosphorus oxychloride. The structure of the target compound was confirmed by 1H NMR, IR and elemental analysis. The total yield was 57% and the purity of the final (product) reached 99.4%.
基金the National Natural Science Foundation of China(20472062 and 20672079)Suppor-ted by the National Science Foundation of Jiangsu Province(BK2004038 and 2006048)