1416152-49-2

Upstream product

• 5720-07-0 4-methoxyphenylboronic acid 
• 116413-49-1 (3-bromo-4-methoxyphenyl)-phenylmethanone 
• 1416152-54-9 4-methoxy-3-(4-methoxyphenyl)benzophenone 
• 123-25-1 succinic acid diethyl ester 

Downstream Products

• 1416152-50-5 C₃₂H₂₆O₅ 
• 1416152-51-6 C₃₁H₂₅IO₃ 
• 1416325-37-5 C₄₉H₄₄O₄ 

Relevant academic research and scientific papers

Chromene compound

PROBLEM TO BE SOLVED: To provide a chromene compound having little discoloration in a non-irradiation state.SOLUTION: This chromene compound is represented by general formula (1) {in the formula, Ris an alkyl group; Rand Rare each independently a hydrogen atom, an alkyl group or an alkoxy group; Rand Rare each independently a hydrogen atom or the like; Rand Rare each independently a hydroxy group or the like; Rand Rare each independently an aryl group or the like; Z is a divalent group selected from an alkylene group, a cycloalkylene group or an arylene group; a is an integer of 0-2; and b is an integer of 0-4}.

CHROMENE COMPOUND

A chromene compound having a short fading half period, especially, a short fading half period even at a low temperature in a general-purpose polymer solid matrix. The chromene compound is represented by the following formula (1). wherein R1 is a hydroxyl group or the like, R2 and R3 are each an aryl group or the like, C* is a spiro carbon atom, a spiro ring A represented by the following formula is a saturated hydrocarbon ring having 4 to 12 ring member carbon atoms or the like, and at least one ring member carbon atom constituting the ring A is a group represented by the following formula (4), and X is a divalent group such as arylene group, wherein R7 and R8 are each a cycloalkyl group or the like.