15880-27-0

Upstream product

• 3016-97-5 1,4-dibenzoylbenzene 
• 74-86-2 acetylene 
• 1066-26-8 sodium acetylide 
• 1066-54-2 trimethylsilylacetylene 
• 100-20-9 terephthaloyl chloride 
• 71-43-2 benzene 

Downstream Products

• 874365-06-7 1,4-di-(8-bromo-3-phenyl-[3H]-naphtho[2,1-b]pyran-3-yl)-benzene 
• 872715-74-7 2-phenyl-2-[p-(1-hydroxy-1-phenylprop-2-yn-1-yl)phenyl]-2H-naphtho[1,2-b]pyran 
• 874365-11-4 1,4-di-(2,6-diphenyl-5-ethoxycarbonyl-[2H]-naphtho[2,1-b]pyran-2-yl)-benzene 
• 872715-70-3 3-phenyl-3-[p-(1-hydroxy-1-phenylprop-2-yn-1-yl)phenyl]-3H-naphtho[2,1-b]pyran 
• 872715-65-6 1,4-di-(3-phenyl-[3H]-naphtho[2,1-b]pyran-3-yl)-benzene 
• 872715-80-5 13-oxo-3-phenyl-3-[p-(3-phenyl-3H-naphtho[2,1-b]pyran-3-yl)]phenylindeno[2,1-f]naphtho[1,2-b]pyran 
• 872715-84-9 13-oxo-3-phenyl-3-[p-(2-phenyl-2H-naphtho[1,2-b]pyran-2-yl)]phenylindeno[2,1-f]naphtho[1,2-b]pyran 

Relevant academic research and scientific papers

Synthesis and photochromism of novel phenylene-linked photochromic bispyrans

(Chemical Equation Presented) Phenylene-linked bisnaphthopyrans were synthesized in good yields via the one-pot reaction of bis-propargyl alcohols with naphthols. Temperature-dependent photochromism in 1,4-phenylene-linked bispyrans leads to up to 60 nm bathochromic shift between the colored species formed at room temperature and at -20°C. Better fatigue resistance and higher colorability was observed in 1,4-phenylene-linked bis-[2H]-naphtho[1,2-b] pyrans by comparison to the 1,3-phenylene linked bis-[2H]-naphtho[1,2-b]pyrans.

Spectrokinetic studies on new bi-photochromic molecules containing two naphthopyran entities

A range of new bi-photochromic molecules containing two identical (3a-d) or two distinct naphthopyran units (6a-d), linked through the phenyl substituents located on the sp3 hybridised pyran ring carbon atom, using conjugated and non-conjugated

Carbon-rich ruthenium complexes containing bis(allenylidene) and mixed alkynyl-allenylidene bridges

Complexes cis-[RuCl(dppe)2][X] (2a X = PF6, 2b X = CF3SO3) react with a variety of bis(propargylic) alcohols to selectively lead to mono-frans-[Cl(dppe)2Ru=C=C=C(R)-T-C(R)(OH)- (C≡C-H)][X] (4) [R = H, Ph; T = m,p-(C6H4), 2,5-(thiophene), 5,5′-(2,2′-bithiophene), 5,5″-(2,2′: 5′2″-terthiophene), -C≡C-] or bis(allenylidene) trans-[Cl(dppe)2Ru=C=C=C(R)-T-(R)C= C=C=RuCl(dppe) 2][X]2 (5) complexes. New dimetallic and trimetallic complexes containing mixed alkynyl-allenylidene bridges, trans-[Cl(dppe) 2Ru-C≡C-p-(C6H4)-(Ph)C=C=C= RuCl(dppe)2][CF3SO3] (12) and trans-[{Cl(dppe)2Ru-C≡C-p-(C6H4)} 2C=C=C=RuCl(dppe)2][CF3SO3] (17)}, were prepared by modification of the carbon-rich ligand of acetylide precursors. UV/Vis and cyclic voltammetry studies show the influence of the unsaturated conjugated bridge on the electronic interaction between the redox centers, and the fine tuning of this property. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005.