112635-43-5Relevant academic research and scientific papers
Synthesis of 1-Aryltetralins and 1-Arylnaphthalenes via (4 + 2) Annulation of β-Ketosulfones with Styryl Bromides
Chang, Meng-Yang,Cheng, Yu-Chieh
supporting information, p. 1682 - 1685 (2016/04/26)
A novel route has been developed for the synthesis of various substituted 1-aryltetralins 6 and 1-arylnaphthalenes 8 via (1) K2CO3-mediated α-styrylation of β-ketosulfones 3 with bromostyryl bromides 4 and (2) stereocontrolled NaBH4-promoted reduction of the resulting γ-alkenones 5, followed by BF3·OEt2-catalyzed intramolecular annulation of the corresponding γ-alkenols 7 under rt/5 h and reflux/10 h conditions, respectively. The key structures of 6 and 8 were confirmed by X-ray crystallographic analysis. A plausible mechanism has been proposed.
A Novel two-step Synthesis of 3-Phenyl-2H-1benzopyrans
Gopal, D.,Rajagopalan, K.
, p. 401 (2007/10/02)
Rearrangement of 3-aryloxy-1-bromo-2-phenylprop-1-enes (3), synthesised from 1,3-bromo 2-phenylprop-1-enes (2) and phenols, in refluxing polyethylene glycol-400 and N,N-diethylaniline gives 3-phenyl-2H-1-benzopyrans (5) in good yields (ca. 70 percent).
