cas 75267-17-3, 5-formyl-benzo[1,3]dioxole-4-carboxylic acid ethyl ester | Articles data ｜lookchem

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75267-17-3

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Total Synthesis of Decumbenine B
Decumbenine B, a 3-arylisoquinoline alkaloid isolated from Corydalis decumbens, has been first synthesized from piperonal via 18 steps.The key step was condensation of 5,6-(methylenedioxy)-homophthalic anhydride 5 with Schiff base 6.
Xu, Xi-Yin,Qin, Guo-Wei,Xu, Ren-Sheng,Zhu, Xing-Zu
p. 14178 - 14188
(2007/10/03)

Total Synthesis of (+/-)-Chelidonine
Condensation of the Schiff base 8 with 3,4-(methylenedioxy)homophthalic anhydride (13) was exploited as the key step in a total synthesis of the benzophenanthridine alkaloid (+/-)-chelidonine (1).A variety of reaction conditions were investigated in order to maximize the production of the desired thermodynamically less stable cis diastereomer.A method was devised for the conversion of 24 to its acid chloride without production of the indenoisoquinoline 30.The migration of an aromatic ring was observed on treatment of the diazo ketone 26 with acid.This reaction is reminiscent of the Hayashi rearrangement.
Cushman, Mark,Choong, Tung-Chung,Valko, Joseph T.,Koleck, Mary P.
p. 5067 - 5073
(2007/10/02)

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Chemical Properties

Boiling Point: 383.6 °C at 760 mmHg
Flash Point:228.1 °C
Density: 1.333 g/cm³
Vapor Pressure: 4.36E-06mmHg at 25°C
Refractive Index: 1.581
PSA: 61.83000
LogP: 1.40450

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