An iterative approach toward the synthesis of discrete oligomeric p-phenylene vinylene organic dyes employing aqueous Wittig chemistry
摘要:
Photovoltaic research has become increasingly prominent as the search for alternatives to fossil fuels are actively sought. A novel process for the iterative synthesis of discrete donor/acceptor-flanked oligostilbenes, key constituents in dye-sensitized solar cells, is described. The aqueous Wittig process is high yielding, proceeds with high (E)-stereoselectivity and allows facile product purification. (C) 2011 Elsevier Ltd. All rights reserved.
A convergent synthesis of the immunosuppressant FTY720 employing aqueous Wittig chemistry
作者:Janice Calzavara、James McNulty
DOI:10.1016/j.tetlet.2011.08.100
日期:2011.10
A short, convergent synthesis of the immunosuppressant FTY720 is described involving the use of 4-hydroxymethylbenzaldehyde as a pivotal intermediate. A double Wittig strategy was developed to connect this dual-functional aldehyde with an alkyl-tether and to a readily available TRIS-derivative leading to an efficient synthesis of the target molecule. (C) 2011 Elsevier Ltd. All rights reserved,