THE REACTION OF PHOSPHONIUM YLIDES WITH 1,2-BENZO[a]PHENAZINE-8,9-DIONE, NAPHTHO[2,1-b]FURAN-1,2-DIONE, BENZO[b]THIOPHENE-2,3-DIONE AND 1,2,3-INDANTRIONE
“…The reaction of isatins 174 (X = NH, NAc; R 1 = H, Me; R 2 = H), benzo[ b ]thiophene-2,3-diones 174 (X = S; R 1 = H, Me; R 2 = H), and naphtho[2,1- b ]furan-1,2-dione 174 [X = O, R 1 R 2 = (CH) 4 ] with phosphonium ylides 107 (R = Ph, COMe, COPh, COOMe, COOEt, CN) leads to the formation of 3-alkylidene derivatives 175 . ,,,− …”
Section: Reactions With Wittig Reagentsmentioning
confidence: 99%
“…Benzo[ a ]phenazine-8,9-dione ( 226 ) undergoes Wittig reaction with alkoxycarbonylmethylene(triphenyl)phosphoranes ( 152 ) in tetrahydrofuran solution at room temperature to produce benzo[ a ]furo[3,2- h ]phenazine-1,2-dicarboxylates ( 227 ) …”
“…The reaction of isatins 174 (X = NH, NAc; R 1 = H, Me; R 2 = H), benzo[ b ]thiophene-2,3-diones 174 (X = S; R 1 = H, Me; R 2 = H), and naphtho[2,1- b ]furan-1,2-dione 174 [X = O, R 1 R 2 = (CH) 4 ] with phosphonium ylides 107 (R = Ph, COMe, COPh, COOMe, COOEt, CN) leads to the formation of 3-alkylidene derivatives 175 . ,,,− …”
Section: Reactions With Wittig Reagentsmentioning
confidence: 99%
“…Benzo[ a ]phenazine-8,9-dione ( 226 ) undergoes Wittig reaction with alkoxycarbonylmethylene(triphenyl)phosphoranes ( 152 ) in tetrahydrofuran solution at room temperature to produce benzo[ a ]furo[3,2- h ]phenazine-1,2-dicarboxylates ( 227 ) …”
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