41443-79-2Relevant academic research and scientific papers
Synthesis and nonlinear optical absorption properties of two new conjugated ferrocene-bridge-pyridinium compounds
Yang, Fan,Xu, Xiu-Ling,Gong, Yong-Hua,Qiu, Wen-Wei,Sun, Zhen-Rong,Zhou, Jin-Wei,Audebert, Pierre,Tang, Jie
, p. 9188 - 9194 (2008/02/10)
Two electron donor-π-acceptor (D-π-A) chromospheres, with ferrocene as the electron donor and pyridinium as the electron acceptor, were synthesized. The nonlinear optical absorption (NOA) properties in the solution state were investigated by the Z-scan technique. Both compounds exhibited reverse saturable absorption (RSA) and optical limiting effect under nanosecond pulse irradiation.
Enzymatic desymmetrization of 2-amino-2-methyl-1,3-propanediol: Asymmetric synthesis of (S)-N-Boc-N,O-isopropylidene-α-methylserinal and (4R)-methyl-4-[2-(thiophen-2-yl)ethyl]oxazolidin-2-one
Tsuji, Takashi,Iio, Yukiko,Takemoto, Toshiyasu,Nishi, Takahide
, p. 3139 - 3142 (2007/10/03)
We report herein, the novel enzymatic desymmetrization of 2-tert-butoxycarbonylamino-2-methyl-1,3-propanediol 1. This method makes it possible to prepare (S)-N-Boc-N,O-isopropylidene-α-methylserinal 3, which is a chiral building block for the synthesis of a variety of α-substituted alanine derivatives. Moreover, optically active (4R)-methyl-4-[2-(thiophen-2- yl)ethyl]oxazolidin-2-one 4, one of the key intermediates in the synthesis of a novel immunosuppressant, has been prepared by this methodology.
A FACILE SYNTHESIS OF PERFLUORO- AND POLYFLUORO-ALKYL THIENYL ACETYLENES
Xin, Yuankang,Wu, Xiaohong,Shen, Yanchang
, p. 15 - 22 (2007/10/02)
Perfluro- and polyfluoro-alkyl thienyl acetylenes were conveniently prepared by the following reaction sequence: Thienylmethylenetriphenylphoshorane (generated from the corresponding chloride and phenyllithium without isolation) was acylated by the additi
