BF3·OEt2-catalyzed synthesis of 1-(tetrahydropyran-3-yl)-1,3-dihydroisobenzofuran and trans-fused hexahydropyrano[3,2-c]chromene derivatives
✍ Scribed by Syama Sundar, Ch.; Ramana Reddy, M.; Sridhar, B.; Kiran Kumar, S.; Suresh Reddy, C.; Reddy, B.V. Subba
- Book ID
- 124133709
- Publisher
- Elsevier Science
- Year
- 2014
- Tongue
- French
- Weight
- 482 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The key 3-(2-oxo-2H-chromen-3-yl)-2-oxo-2H,5H-pyrano[3,2-c]chromen-5-yl acetates 3 were synthesized in high yields by cyclocondensation of 4-oxo-4H-chromen-3-carbaldehydes 1 with coumarin-3-acetic acids 2 under mild conditions. The reaction pathway involves aldol condensation and subseq
In situ generated aza-diene, from N-[methyl-N-(trimethylsilyl)methyl]aniline in the presence of a catalytic amount of molecular iodine undergoes smooth [4+2] cycloaddition with electron-rich enol ethers, such as 3,4-dihydro-2H-pyran and 2,3-dihydrofuran under mild and neutral conditions to afford th