Photochemical cycloaddition reagents for rigidly attaching the 1,4-dimethoxynaphthalene chromophore to scaffold (CROSBI ID 94523)
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Podaci o odgovornosti
Margetić, Davor ; Russell, Richard, A. ; Warrener, Ronald, N.
engleski
Photochemical cycloaddition reagents for rigidly attaching the 1,4-dimethoxynaphthalene chromophore to scaffold
The norbornanecyclobutene epoxides 1a-1c containing a fused 1,4-dimethoxynaphthalene chromophore have been reacted with cyclobutenes, cyclohexenes, norbornenes, 7-isopropylidenenorbornenes, 7-azanorbornenes, and other cyclic or electron-deficient alkenes at room temperature to form 1:1 adducts in stereoselective 1,3-dipolar cycloaddition reactions; alkynes can also participate in this reaction, The ability to form 2:1 adducts has also been demonstrated, thereby opening up opportunities for preparing functionalized products with large chromophore separations.
BICHROMOPHORIC SYSTEMS; MOLECULES; BEARING; STATE
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