An article Dichloromethane as a methylene synthon for regioselective linkage of diverse carboxylic acids: Direct access to methylene diesters under metal-free conditions WOS:000474501100009 published article about ONE-POT CONVERSION; ORGANIC POLLUTANTS; ALDEHYDES; ARYL; PHOTODEGRADATION; PHOTOREDUCTION; CATALYST; STRATEGY; FACILE; CH2CL2 in [Wang, Shuiliang; Fu, Zhengjiang; Huang, Zhicong; Jiang, Yongqing; Guo, Shengmei; Cai, Hu] Nanchang Univ, Coll Chem, Nanchang 330031, Jiangxi, Peoples R China; [Fu, Zhengjiang] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China in 2019.0, Cited 29.0. COA of Formula: C7H5NO4. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7
A metal-free cross coupling between common CH2Cl2 and carboxylic acids has been achieved with K2CO3 as the sole additive. This simple protocol is a convenient and cost-effective route to synthesize methylene diesters from a wide scope of carboxylic acids substrates with good functional group tolerance. Several gram-scale reactions have been performed to evaluate the effectiveness and practicality of this protocol. (C) 2019 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem