Related Products of 5631-96-9. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 5631-96-9, Name is 2-(2-Chloroethoxy)tetrahydro-2H-pyran. In a document type is Article, introducing its new discovery.
The intramolecular cycloaddition reactions of the nitrile oxides 30 a-d, 35, 36, and 47, obtained in situ from the 2,5-difunctional furan hydroximoyl chlorides 12a, b, 18 and the nitro compounds 9c, d, 21, 29, are described.With 30c the expected isoxazolofuranophane of type 31 is formed in acceptable yield; the additionally formed regioisomer 32c and the dimer 34c are very minor products in this case.Whereas the highest homologue 30d gives a complex product mixture with small amounts of 31d and the macrocycle 34d as the only identified compounds, the derivatives bearing a shorter side chain (30a, b; n = 1, 2) give rise to the exclusive reaction of the dipole with a double bond of the furan system(to give 33a, b).The same behavior is observed in the case of the electronically and sterically modified dipole systems 35/36 and 47, resp.; in spite of the much more favorable conditions for the formation of cyclophanes the cycloadditions result in the exclusive formation of the heterotricycles 41, 42 and 49.Possible preparative applications of the isomeric cycloaddition compounds are discussed. – Key Words: 1,3-Dipolar cycloadditions, intramolecular / Nitrile oxides / Regioselectivity / Furanophanes
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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics