934815-36-8Relevant articles and documents
New syntheses of dalbergichromene and dalbergin from vanillin via neoflavene intermediate
Li, Sie-Rong,Chen, Liang-Yeu,Tsai, Jui-Chi,Tzeng, Jing-Yu,Tsai, Ian-Lih,Wang, Eng-Chi
, p. 2139 - 2141 (2007)
In this Letter, naturally occurring dalbergichromene and dalbergin were synthesized from a common neoflavene intermediate, which was derived from vanillin. The giving neoflavene intermediate was debenzylated with AlCl3 to yield dalbergichromene in 39% total yield, and it was oxidized by DDQ, and subsequently debenzylated by Pd(OH)2/C and cyclohexene in refluxing ethanol to give dalbergin in 31% total yield.