Unlocking Amides through Selective C–N Bond Cleavage: Allyl Bromide-Mediated Divergent Synthesis of Nitrogen-Containing Functional Groups
作者:Karthick Govindan、Nian-Qi Chen、Yu-Wei Chuang、Wei-Yu Lin
DOI:10.1021/acs.orglett.1c03541
日期:2021.12.17
We report a new set of reactions based on the unlocking of amides through simple treatment with allyl bromide, creating a common platform for accessing a diverse range of nitrogen-containing functional groups such as primary amides, sulfonamides, primary amines, N-acyl compounds (esters, thioesters, amides), and N-sulfonyl esters. The method has potential industrial applicability, as demonstrated through
Ring Opening/Site Selective Cleavage in <i>N-</i>Acyl Glutarimide to Synthesize Primary Amides
作者:Karthick Govindan、Wei-Yu Lin
DOI:10.1021/acs.orglett.1c00010
日期:2021.3.5
A LiOH-promoted hydrolysis selective C–N cleavage of twisted N-acyl glutarimide for the synthesis of primaryamides under mild conditions has been developed. The reaction is triggered by a ring opening of glutarimide followed by C–N cleavage to afford primaryamides using 2 equiv of LiOH as the base at room temperature. The efficacy of the reactions was considered and administrated for various aryl
A Cu-catalyzed intramolecular C-H amination for the synthesis of carbazoles has been developed. The key to success is the installation of the picolinamide-based directing group, which is spontaneously removed after the coupling event. The Cu catalysis proceeded smoothly under Pd- and I(III)-free conditions, and its mild oxidation aptitude enables the rapid and concise construction of heteroatom-incorporated carbazole core pi-systems.
Reactions with Chlorosulfonyl/Chlorocarbonyl Isocyanates: Synthesis of Pyrrolo[1,2,3-de]-1,2,4-benzothiadiazin-3(2H)-one 1,1-Dioxides and 1H-Pyrrolo[3,2,1-ij]quinazoline-1,3(2H)-diones
作者:Ahmed Kamal、Narender A. V. Reddy、Prahlad B. Sattur
DOI:10.3987/r-1986-12-3397
日期:——
Acid halides of carbazole-n-carboxylic acids and process for their production