600-22-6Relevant articles and documents
The electron stimulated chemistry of methyl lactate on Cu(1 1 1)
Fleming,Kadodwala
, p. 409 - 414 (2010)
The electron stimulated chemistry of monolayers of (R)/(S)-methyl lactate ((S)/(R)-MLAc) adsorbed on Cu(1 1 1) has been investigated. Monolayers of MLAc undergo highly efficient electron stimulated processes predominately desorption, but also a significant fraction is converted to an adsorbed alkoxide moiety through the selective cleavage of the O-H bond. The efficiency of the depletion of the adsorbed MLAc state and the absence of significant non-selective fragmentation contrasts with previous studies of the electron beam irradiation of monolayers of oxygen containing organic molecules.
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Simon,Piaux
, (1924)
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Metal-Free Synthesis of Polysubstituted Imidazolinone Through Cyclization of Amidines with 2-Substituted Acrylates
Liu, Zhen,Zhang, Yan-Shun,Wei, Yin,Shi, Min
supporting information, p. 1093 - 1099 (2020/02/27)
Polysubstituted imidazolinones were synthesized in a facile metal-free cascade nucleophilic cyclization of easily available amidines and 2-substituted acrylates. This protocol is distinguished by simple, mild, and catalyst-free reaction conditions with a broad substrate scope, affording the desired products in moderate to good yields and providing an efficient strategy for synthesis of polysubstituted imidazolinone.
Novel effect of zinc nitrate/vanadyl oxalate for selective catalytic oxidation of α-hydroxy esters to α-keto esters with molecular oxygen: An in situ ATR-IR study
Ju, Yongwei,Du, Zhongtian,Xiao, Chuhong,Li, Xingfei,Li, Shuang
supporting information, (2019/04/05)
Selective oxidation of α-hydroxy esters is one of the most important methods to prepare high value-added α-keto esters. An efficient catalytic system consisting of Zn(NO3)2/VOC2O4 is reported for catalytic oxidation of α-hydroxy esters with molecular oxygen. Up to 99% conversion of methyl DL-mandelate or methyl lactate could be facilely obtained with high selectivity for its corresponding α-keto ester under mild reaction conditions. Zn(NO3)2 exhibited higher catalytic activity in combination with VOC2O4 compared with Fe(NO3)3 and different nitric oxidative gases were detected by situ attenuated total reflection infrared (ATR-IR) spectroscopy. UV-vis and ATR-IR results indicated that coordination complex formed in Zn(NO3)2 in CH3CN solution was quite different from Fe(NO3)3; it is proposed that the charge-transfer from Zn2+ to coordinated nitrate groups might account for the generation of different nitric oxidative gases. The XPS result indicate that nitric oxidative gas derived from the interaction of Zn(NO3)2 with VOC2O4 could be in favor of oxidizing VOC2O4 to generate active vanadium (V) species. It might account for different catalytic activity of Zn(NO3)2 or Fe(NO3)3 combined with VOC2O4. This work contributes to further development of efficient aerobic oxidation under mild reaction conditions.
