Iron-Mediated Cleavage of CC Bonds in Vicinal Tricarbonyl Compounds in Water
作者:Jasmin Mecinović、Refaat B. Hamed、Christopher J. Schofield
DOI:10.1002/anie.200806296
日期:2009.3.30
Three of a kind: Vicinaltricarbonylcompounds undergo CCcleavage mediated by ferric ions (see scheme). The observed cleavage of ninhydrin and dehydroascorbic acid has relevance for amino acid detection and the metabolism of vitamin C.
Using calcium formate, alpha-Ca(DCOO)2, as a test sample, we explore how precisely deuteronquadrupolecoupling (QC) and chemicalshift (CS) tensors Q and sigma can currently be measured. The error limits, +/-0.09 kHz for the components of Q and +/-0.06 ppm for those of sigma, are at least three times lower than in any comparable previous experiment. The concept of a new receiver is described. A signal/noise
Synthesis of C-1 Deuterated 3-Formylindoles by Organophotoredox Catalyzed Direct Formylation of Indoles with Deuterated Glyoxylic Acid
作者:Yue Dong、Xiangmin Li、Peng Ji、Feng Gao、Xiang Meng、Wei Wang
DOI:10.1021/acs.orglett.2c01768
日期:2022.7.22
indoles with newly developed, cost-effective deuterated glyoxylic acid as formylation agent under visible light and air (O2) as terminal oxidant has been developed. An isatin byproduct produced from the corresponding indole reactant serves as a facilitator for the formylation process. The simple, mild, metal- and oxidant-free protocol enables the synthesis of structurally diverse C1-deuterated 3-formylindoles
作者:Tong, Xiaogang、Wu, Zugen、Ang, Hwee Ting、Miao, Yidan、Lu, Yixin、Wu, Jie
DOI:10.1021/acscatal.4c02638
日期:——
The direct reductive functionalization of alkynes undermildconditions presents a promising yet challenging avenue for accessing value-added molecules. Alkyne radical anions represent a distinct class of reactive intermediates characterized by both a charge and an unpaired electron, thus holding great potential for facilitating diverse bond formations, particularly in alkyne reductive functionalization