Journal ArticleDOI
Acid catalysis of the Claisen rearrangement. 2. Formation of the benzofurobenzopyran and benzofuro[3,2-b]benzofuran skeletons from 1,4-bis(aryloxy)-2-butynes
Dallas K. Bates,Michael C. Jones +1 more
About:
This article is published in Journal of Organic Chemistry.The article was published on 1978-09-01. It has received 27 citations till now. The article focuses on the topics: Claisen rearrangement & Benzofuran.read more
Citations
More filters
Journal ArticleDOI
A new method for preparation of dihydrodinaphthopyranopyrans
TL;DR: In this paper, the synthesis of 7a,15a-dlhydro, 15a-methylnaphtho[2,l-b] naphthol [1',2':5,6] pyrano[3,2-e]pyran (II) and 7a 15a -dihydro-7a-mmethyl-15aisopropyi naphTHo [2,1-b], naphthso [1',2' : 5,6]-pyrano [3
Journal ArticleDOI
Regioselective synthesis of 7-acetyl-11c-methyl-4b,5,7,11c-tetra-hydro[1]benzofuro[2',3':4,5]thiopyrano[2,3-b]indoles by sequential Claisen rearrangement of 2-(4'-aryloxybut-2'-ynylthio)-1-acetylindoles
Krishna C. Majumdar,Safiul Alam +1 more
TL;DR: In this article, the authors showed that 9-Acetyl-4-aryloxymethyl-2,9-dihydrothiopyrano[2,3-b]indoles can be synthesized in 80-85 % yield by thermal rearrangement of 2-(4'-aryloxybut-2'-ynylthio)-1-acetylindoles.
Journal ArticleDOI
Synthetic modulation of the peripheral 2-, 3-, 9- and 12-oxygenation pattern of rotenoids
TL;DR: The rotenoid 12-carbonyl can be removed by reduction and dehydration, and the resulting stilbene, when catalytically hydrogenated, gives the cis-B/C-12-deoxy compound.
Journal ArticleDOI
Regioselective Synthesis of Coumarin‐Annulated Polyheterocycles by [3,3] Sigmatropic Rearrangement
TL;DR: Several coumarin-annulated polyheterocycles have been regioselectively synthesized in 82-90% yield by anhydrous AlCl3−catalyzed charge-accelerated Claisen rearrangement of 4−aryloxymethyl [3,2]-c] pyrano benzopyran‐5•ones in dichloromethane at rt for 0.5
Journal ArticleDOI
Regioselective synthesis of pentacyclic polyheterocycles: Sequential [3,3] sigmatropic rearrangement of 4-(4′-aryloxybut-2′-ynyloxy)-1-phenyl-1,8-naphthyridin-2(1H)-ones
TL;DR: In this article, a number of 4-aryloxymethyl-6-phenyl-2H-pyrano[3,2-c][1,8]naphthyridin-5(6H)-ones (4a-f) were regioselectively synthesized in 72-78% yield by the Claisen rearrangement of 4-(4′-aryloxybut-2′-ynyloxy)-1-phenylon-1, 8-naphTHyrin-2(1H)-one in