Silver -catalyzed furan synthesis

Jimenez-Gonzalez, L., Garcia-Munoz, S., Alvarez-Corral, M., Munoz-Dorado, M. and Rodriguez-Garcia, I. 2006. Silver-catalyzed asymmetric synthesis of 2,3-dihydrobenzo-furans A new chiral synthesis of pterocarpans. Ghem. Eur. J. 12 8762-8769. 

Silver-catalyzed cyclization reactions of allenic carbonyl compounds were applied for the total synthesis of various natural products, including rubifolide,331 kallolide A and B,332,332a and deoxypukalide.333 In their total synthesis of the enantiomer of rubifolide 396, Marshall and Sehon331 took advantage of the silver-catalyzed cycloisomerization of the allenic ketone 393 to the furan 394, as well as of the analogous reaction of the allenic carboxylate 395 to the target molecule 396 (Scheme 115). 

Kim, S. and Lee, H. 2008. Cyclization of allenyne-l,6-diols catalyzed by gold and silver salts An efficient selective synthesis of dihydrofuran and furan derivatives. Adv. Synth. Catal. 350 547-551. 

Meyers Al (1974) Heterocycles in organic synthesis. Wiley-lnterscience, New York Safaei-Ghomi J, Ghasemzadeh MA, Kakavand-Qalenoei A (2012) Cul-nanoparticles-cat-alyzed one-pot synthesis of benzo[6]furans via three-component coupling of aldehydes, amines and alkyne. J Saud Chem Soc. http //dx.doi.Org/10.1016/j.jscs.2012.07.010 Yu M, Lin M, Han C, Zhu L, Li C-J, Yao X (2010) Ligand-promoted reaction on silver nanoparticles phosphine-promoted, silver nanoparticle-catalyzed cyclization of 2-(l-hy-droxy-3-arylprop-2-ynyl)phenols. Tet Lett 51 6722-6725... 

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