274910-20-2

Basic information

• Product Name: 2-(2,3-dihydro-1,4-benzodioxin-5-yl)acetic acid
• CAS NO: 274910-20-2
• Molecular Weight: 194.187
• Mol File: 274910-20-2.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 2-(2,3-dihydro-1,4-benzodioxin-5-yl)acetic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(2,3-dihydro-1,4-benzodioxin-5-yl)acetic acid(274910-20-2)
• EPA Substance Registry System: 2-(2,3-dihydro-1,4-benzodioxin-5-yl)acetic acid(274910-20-2)

Safety Data

• Hazardous Substances Data: 274910-20-2(Hazardous Substances Data)

Upstream product

• 274910-19-9 (2,3-dihydrobenzo[b][1,4]dioxin-5-yl)methanol 
• 1092477-59-2 2-diazo-1-(2,3-dihydro-1,4-benzodioxin-5-yl)ethanone 
• 38871-41-9 2,3-dihydrobenzo-[b]-1,4-dioxine-5-carbonyl chloride 
• 4442-53-9 2,3-dihydro-1,4-benzodioxine-5-carboxylic acid 
• 29668-43-7 2,3-dihydro-benzo[1,4]dioxine-5-carbaldehyde 
• 24677-78-9 2,3-dihydroxybenzaldehyde 
• 116939-11-8 monochlormethylbenzo-1,4-dioxane 
• 214894-99-2 2-(2,3-dihydrobenzo[b][1,4]dioxin-5-yl)acetonitrile 

Downstream Products

• 1092477-62-7 (+/-)-N'-[3,5-bis(trifluoromethyl)phenyl]-2-(2,3-dihydro-1,4-benzodioxin-5-yl)-2-(4-methyl-1-piperazinyl)acetohydrazide 
• 1092476-37-3 (R)-N'-[3,5-bis(trifluoromethyl)phenyl]-2-(2,3-dihydro-1,4-benzodioxin-5-yl)-2-(4-methyl-1-piperazinyl)acetohydrazide 
• 1092476-36-2 (S)-N'-[3,5-bis(trifluoromethyl)phenyl]-2-(2,3-dihydro-1,4-benzodioxin-5-yl)-2-(4-methyl-1-piperazinyl)acetohydrazide 

Relevant articles and documents

PYRANOQUINAZOLINE DERIVATIVES AND NAPHTHOPYRAN DERIVATIVES

[Problem] A problem is presented in that conventional photochromic compounds cannot be considered adequate in terms of the colorizing/decolorizing rate and durability, and the production process therefore has many steps. The present invention provides an industrially applicable photochromic compound that has both a rapid colorizing/decolorizing reaction and high durability and can also be synthesized at a low cost. [Solution] This compound is characterized in that etheric oxygen atoms are bonded to the carbon atoms at position 1 of a pyranoquinazoline (8H-pyrano[3,2-f]quinazoline) skeleton and position 10 of a naphthopyran (3H-naphtho[2,1-b]pyran) skeleton, said compound having photochromic properties and being a photochromic compound that has both a rapid colorizing/decolorizing reaction and high durability. Also provided is an industrially applicable photochromic compound that can be synthesized at a low cost.

Benzofuran derivatives, their preparation and use

The present invention relates to benzofuran derivatives having general Formula (I) wherein A is selected from (1), (2), (3), (4) wherein Z is O or S; s is 0 or 1; q is 0 or 1; R4 is hydrogen, C1-6-alkyl, C2-6-alkenyl, Csu