- Synthesis of oligo(phenylene ethynylene)s with dendrimer "shells" for molecular electronics
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Two series of oligo(phenylene ethynylene)s (OPEs) with different dendrimer side groups have been designed and synthesized. The molecules contain thiol groups at both ends to enable interconnection between nanoscale gapped metallic electrodes. The different dendrimer groups act as "shells", allowing tailoring to the nanoscopic environment surrounding the OPE "core". Meanwhile, the dendrimer shells also act as spacers for the precise control of the packing density and intermolecular interaction between the OPE cores.
- Shi, Zi-Fa,Wang, Le-Jia,Wang, Hong,Cao, Xiao-Ping,Zhang, Hao-Li
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p. 595 - 598
(2008/02/02)
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- SUBSTITUTED BENZOPYRANS AS SELECTIVE ESTROGEN RECEPTOR-BETA AGONISTS
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This invention relates to novel heterocycles which are antagonists at the melanin-concentrating hormone receptor 1 (MCHR1), also referred to as 11CBy, to pharmaceutical compositions containing them, to processes for their preparation, and to their use in medicines. Compounds of the invention have the formula: (I)
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- Friedel-Crafts Benzylation of 1,4-Dialkoxybenzenes - Cleavage and Rearrangement of Esters and Methoxymethyl Ethers in ZnCl2 Montmorillonite K10 Clay
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Benzylation of p-dialkoxybenzenes can be achieved through the use of modified montmorillonite K10 clay. For the first time, synthese of nitro-diarylmethanes were obtained by Friedel-Crafts alkylation with good yields. In the case of p-methoxymethyl phenyl ether and phenyl ester, selectivity favoring Fries rearrangement over benzylation is reported.
- Waterlot, C.,Couturier, D.,Hasiak, B.
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p. 417 - 429
(2007/10/03)
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- SYNTHESIS OF 2H-1-BENZOPYRANS FROM ARYLLITHIUM AND α,β-UNSATURATED ALDEHYDES
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The synthesis of 2,2-dialkyl-2H-1-benzopyrans (23), (25), (27), (30), (31) and (29) was performed employing the 1,2-addition reaction of aryllithium salts to cyclocitral, 3-methyl-2-butenal, citral and farnesal respectively.Subsequent deprotection with a
- Cruz-Almanza, Raymundo,Perez-Flores, Francisco,Lemini, Cristina
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p. 759 - 774
(2007/10/02)
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