Oxidative rearrangement of 2-furylcarbamates with dimethyldioxirane: a high-yielding preparation of 5-hydroxypyrrol-2(5H)-ones
摘要:
A mild, general and efficient method for the oxidative rearrangement of 2-furylcarbamates to N-Boc-5-hydroxypyrrol-2(5H)-ones is reported. The feasibility of removing the Boc group from the products was demonstrated by the synthesis of two hitherto unknown 5-aryl-5-hydroxypyrrol-2(5H)-ones. (C) 2011 Elsevier Ltd. All rights reserved.
Indole synthesis by palladium-catalyzed tandem allylic isomerization – furan Diels–Alder reaction
作者:Jie Xu、Peter Wipf
DOI:10.1039/c7ob01654a
日期:——
A Pd(0)-catalyzed elimination of an allylic acetate generates a π-allyl complex that is postulated to initiate a novel intramolecular Diels–Alder cycloaddition to a tethered furan (IMDAF). Under the reaction conditions, this convergent, microwave-accelerated cascade process provides substituted indoles in moderate to good yields after Pd-hydride elimination, aromatization by dehydration, and in situ
Acylamino heteroaryl compounds in which the heteroaryl nucleus is a 5-membered ring containing a single heteroatom, which may be oxygen, or sulphur, methods of making the compounds and pharmaceutical formulations containing the compounds. The compounds have anti-allergy activity.
Formation of 6-Azaindoles by Intramolecular Diels–Alder Reaction of Oxazoles and Total Synthesis of Marinoquinoline A
作者:Mana Osano、Dishit P. Jhaveri、Peter Wipf
DOI:10.1021/acs.orglett.0c00417
日期:2020.3.20
6-azaindoles was developed. The IMDAO reaction was applied in a total synthesis of the aminophenylpyrrole-derived alkaloid marinoquinoline A, also featuring the use of a Curtius reaction for preparation of a 5-aminooxazole, a propargylic C,H-bond insertion, an in situ alkyne-allene isomerization, and a ruthenium-catalyzedcycloisomerization for benzene ring annulation to the 6-azaindole.
Oxidative rearrangement of 2-furylcarbamates with dimethyldioxirane: a high-yielding preparation of 5-hydroxypyrrol-2(5H)-ones
作者:John Boukouvalas、Richard P. Loach、Etienne Ouellet
DOI:10.1016/j.tetlet.2011.07.084
日期:2011.9
A mild, general and efficient method for the oxidative rearrangement of 2-furylcarbamates to N-Boc-5-hydroxypyrrol-2(5H)-ones is reported. The feasibility of removing the Boc group from the products was demonstrated by the synthesis of two hitherto unknown 5-aryl-5-hydroxypyrrol-2(5H)-ones. (C) 2011 Elsevier Ltd. All rights reserved.