| 摘要 |
PURPOSE:To provide a new compound having an excellent coloration performance, a good optically coloration and decoloration-repeating characteristic, a good dispersing property in the copolymers or resins of other polymerizable monomers, and useful as a photochromic material for recording materials, a photochromic material for optical equipments, etc. CONSTITUTION:A compound having a Se at the 1 position and represented by formula I. For example, 3-Methyl-9'-hydroxy-spiro[benzoselenazoline2,3'(3'H) naphtho-[2,1-b]-1,4-oxadine]. The compound of formula I is obtained by adding methyl iodide to 2-methylbenzoselenazole and subsequently reacting the produced 2,3-dimethylbenzoselenazolenium iodide of formula III with 1-nitro-2,7- dihydroxynaphthalene of formula IV in the presence of triethylamine. |
