Tetrahydrobenzo pyran derivatives

S. Balalaie, M. Baraijanian, A. M. Amani, B. Movassagh, Synlett 2006, 263-266. (S)-Proline as a neutral and efficient catalyst for the one-pot synthesis of tetrahydrobenzo[ ]pyran derivatives in aqueous media. 

Ranu BC, Banejee S, Roy S (2008) A task specific ionic liquid, [bmim][OH]-promoted efficient, green and one-pot synthesis of tetrahydrobenzo[i)]pyran derivatives. Indian J Chem 47B 1108-1112... 

A variety of tetrahydrobenzo[(i]pyran derivatives (9) were synthesized in good yields via three-component condensation reaction between aryl/alkyl aldehydes, malononitrile, and dimedone in ethanol-water media using both homogeneous and heterogeneous catalysts (Scheme 26) [125,128-131],... 

SCHEME 26 Synthesis of tetrahydrobenzo[fc]pyran derivatives 9 in ethanol-water media [125,128-131]. 

S.B. Bandgar, B.P. Bandgar, B.L. Korbad, J.V. Totre, S. Patil, Uncatalyzed reactions in aqueous media three-component, one-pot, clean synthesis of tetrahydrobenzo[fc]pyran derivatives, Aust. J. Chem. 60 (2007) 305-307. 

A. Mobinikhaledi, M.A.B. Fard, Tetrabutylammonium bromide in water as a green media for the synthesis of pyrano[2,3-d]pyrimidinone and tetrahydrobenzo[6]pyran derivatives, Acta Chim. Slov. 57 (2010) 931-935. 

D. Tahmassebi, J. A. Bryson, S.l. Binz, l,4 Diazabicyclo[2.2.2]octane as an efficient catalyst for a clean, one-pot synthesis of tetrahydrobenzo[fc] pyran derivatives via multicomponent reaction in aqueous media, Synth. Commun. 41 (2011) 2701-2711. 

A. Mobinikhaledi, N. Foroughifar, M.A.B. Fard, Eco-friendly and efficient synthesis of pyrano[2,3-d] pyrimidinone and tetrahydrobenzo[i ] pyran derivatives in water, Synth. React. Inorg. Met.-Org. Nano-metal Chem. 40 (2010) 179-185. 

H.A. Oskooie, M.M. Heravi, N. Karimi, M.E. Zadeh, Caro s acid-sflica gel an efficient and versatile catalyst for the one-pot synthesis of tetrahydrobenzo[fc]pyran derivatives, Synth. Commun. 41 (2011) 436-440. 

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