1978
DOI: 10.1016/0040-4020(78)80048-9
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Tropyliumionen und tropilidene—V

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Cited by 11 publications
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“…Multistep synthesis of 4,5-benzotropone (11): The first multistep synthesis for 4,5-benzotropone ( 11 ) is the original procedure described by Thiele, Schneider, and Weitz, which involves the condensation of o -phthalaldehyde ( 27 ) with diethyl 1,3-acetonedicarboxylate ( 28 ), followed by hydrolysis and decarboxylation steps [ 46 47 ] ( Scheme 5 ). Similar syntheses were made by Cook’s [ 48 ] and Föhlisch’s [ 49 ] groups. Nevertheless, for performing large-scale synthesis, the cost of 27 make deterrent and an autoclave environment at 200–250 °C for final stage are an unattractive feature ( Scheme 5 ).…”
Section: Reviewmentioning
confidence: 76%
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“…Multistep synthesis of 4,5-benzotropone (11): The first multistep synthesis for 4,5-benzotropone ( 11 ) is the original procedure described by Thiele, Schneider, and Weitz, which involves the condensation of o -phthalaldehyde ( 27 ) with diethyl 1,3-acetonedicarboxylate ( 28 ), followed by hydrolysis and decarboxylation steps [ 46 47 ] ( Scheme 5 ). Similar syntheses were made by Cook’s [ 48 ] and Föhlisch’s [ 49 ] groups. Nevertheless, for performing large-scale synthesis, the cost of 27 make deterrent and an autoclave environment at 200–250 °C for final stage are an unattractive feature ( Scheme 5 ).…”
Section: Reviewmentioning
confidence: 76%
“…Several research studies have been reported on the synthesis and properties of 4,5-benzotropones since they were first prepared by Thiele and Weitz nearly a century ago [ 46 47 ]. Similar approaches of this method was independently studied by Cook [ 48 ] and Föhlisch [ 49 ] groups. In 1975, the crystal and molecular structure of 4,5-benzotropone ( 11 ) was determined by Hata’s group [ 50 ].…”
Section: Reviewmentioning
confidence: 87%
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