Regioselective unusual formation of spirocyclic 4-{3′-benzo(2′, 3′-dihydro)furo}-9-methyl-2,3,9-trihydrothiopyrano [2,3-b]indole by acid-catalyzed reaction of enol ethers

Journal of Heterocyclic Chemistry

Volumn 46, Issue 1, 2009, Pages 62-68

  Majumdar, K C ^a   Alam, S ^a   Chattopadhyay, B ^a  

^a UNIVERSITY OF KALYANI   (India)

Author keywords

[No Author keywords available]

Indexed keywords

4 [(2 CHLOROPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(2,3 DIMETHYLPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(2,3 DIMETHYLPHENOXY)METHYL] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(2,4 DICHLOROPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(2,4 DICHLOROPHENOXY)METHYL] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(2,4 DIMETHYLPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(2,5 DIMETHYLPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(3,5 DIMETHYLPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(3,5 DIMETHYLPHENOXY)METHYL] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(4 CHLORO 2 METHYLPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(4 CHLORO 2 METHYLPHENOXY)METHYL] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(4 CHLOROPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(4 CHLOROPHENOXY)METHYL] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(4 METHOXYPHENOXY)METHYLENE] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4 [(4 METHOXYPHENOXY)METHY] 9 METHYL 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 4,6,9' TRIMETHYL 3',9' DIHYDRO 2H,2'H SPIRO[BENZOFURAN 3,40 THIOPYRANO[2,3 B]INDOLE]; 4,7,9' TRIMETHYL 3',9' DIHYDRO 2H,2'H SPIRO[BENZOFURAN 3,4' THIOPYRANO[2,3 B]INDOLE]; 4,9' DIMETHYL 3',9' DIHYDRO 2H,2'H SPIRO[BENZOFURAN 3,4' THIOPYRANO[2,3 B]INDOLE]; 5,7,9' TRIMETHYL 3',9' DIHYDRO 2H,2'H SPIRO[BENZOFURAN 3,4' THIOPYRANO[2,3 B]INDOLE]; 5,9' DIMETHYL 3',9' DIHYDRO 2H,2'H-SPIRO[BENZOFURAN 3,4' THIOPYRANO[2,3 B]INDOLE]; 6,7,9' TRIMETHYL 3',9' DIHYDRO 2H,2'H SPIRO[BENZOFURAN 3,4' THIOPYRANO[2,3 B]INDOLE]; 9 METHYL 4 (3 TOLYLOXYMETHYLENE) 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 9 METHYL 4 (4 TOLYLOXYMETHYL) 2,3,4,9 TETRAHYDROTHIOPY RANO[2,3 B]INDOLE; 9 METHYL 4 (4 TOLYLOXYMETHYLENE) ,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 9 METHYL 4 (PHENOXYMETHYL) 2,3,4,9 TETRAHYDROTHIOPY RANO[2,3 B]INDOLE; 9 METHYL 4 (PHENOXYMETHYLENE) 2,3,4,9 TETRAHYDROTHIOPYRANO[2,3 B]INDOLE; 9' METHYL 3',9' DIHYDRO 2H,2'H SPIRO[BENZOFURAN 3,4' THIOPYRANO[2,3 B]INDOLE]; INDOLE DERIVATIVE; SPIROCYCLIC 4 [3' BENZO(2',3' DIHYDRO)FURO] 9 METHYL 2,3,9 TRIHYDROTHIOPYRANO[2,3 B]INDOLE DERIVATIVE; UNCLASSIFIED DRUG; UNINDEXED DRUG;

ARTICLE; CARBON NUCLEAR MAGNETIC RESONANCE; CATALYSIS; CLAISEN REARRANGEMENT; DRUG STRUCTURE; DRUG SYNTHESIS; PROTON NUCLEAR MAGNETIC RESONANCE;

EID: 61849098370     PISSN: 0022152X     EISSN: None     Source Type: Journal    
DOI: 10.1002/jhet.31     Document Type: Article

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