81289-22-7Relevant articles and documents
Syntheses of 2-Benzylbenzofuran Derivatives and 2-Aryl-nitrochroman Derivatives from Nitroalkene Precursors
Huang, Chia-Yu,Kuo, Chun-Wei,Kavala, Veerababurao,Yao, Ching-Fa
supporting information, p. 2720 - 2734 (2016/06/08)
Simple and straightforward methods for the synthesis of 2-benzylbenzofuran, 3-substituted 2-benzylbenzofuran, and 2-aryl-nitrochroman derivatives are described. Benzofurans were generated from nitroalkenes by reduction with NaBH4 followed by a Nef reaction and acid-mediated cyclization, whereas 3-substituted 2-benzylbenzofurans were prepared from nitroalkenes by reactions with Grignard reagents followed by a Nef reaction and an acid-mediated cyclization in a one-pot process. The synthesis of chromans involved a Knoevenagel condensation and the 1,4-diazabicyclo[2.2.2]octane (DABCO) assisted cyclization of β-(2-hydroxyphenyl)-nitroethanes and benzaldehydes, also in a one-pot process. Simple and convenient methods for the synthesis of 2-benzylbenzofuran, 3-substituted 2-benzylbenzofuran, and 2-aryl-nitrochroman derivatives are described.
Reduction of α,β-unsaturated nitroalkenes with borane and borohydrides. A convenient route to 3-nitro-, 3-hydroxylamino-, and 3-amino-2H-1-benzopyran derivatives
Varma,Gai,Kabalka
, p. 767 - 772 (2007/10/02)
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