118520-72-2

Basic information

• Product Name: methyl 2-[(4-methylphenyl)ethynyl]benzoate
• Synonyms: methyl 2-[(4-methylphenyl)ethynyl]benzoate
• CAS NO: 118520-72-2
• Molecular Weight: 250.297
• Mol File: 118520-72-2.mol
• Article Data: 15

Chemical Properties

• CAS DataBase Reference: methyl 2-[(4-methylphenyl)ethynyl]benzoate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl 2-[(4-methylphenyl)ethynyl]benzoate(118520-72-2)
• EPA Substance Registry System: methyl 2-[(4-methylphenyl)ethynyl]benzoate(118520-72-2)

Safety Data

• Hazardous Substances Data: 118520-72-2(Hazardous Substances Data)

Upstream product

• 88-67-5 2-Iodobenzoic acid 
• 610-97-9 o-iodo-methyl-benzoic acid 
• 766-97-2 4-n-methylphenylacetylene 
• 17763-70-1 methyl 2-(trifluoromethylsulfonyloxy)benzoate 
• 610-94-6 2-bromobenzoic acid methyl ester 
• 31638-66-1 (p-tolylethynyl)copper 

Downstream Products

• 1205555-53-8 3-[2-(p-tolylethynyl)phenyl]pentan-3-ol 
• 1361131-94-3 C₁₆H₁₈O 
• 1361132-13-9 1',3'-dimethyl-3-p-tolyl-3,4-dihydro-1H,1'H-spiro[naphthalene-2,5'-pyrimidine]-2',4',6'(3'H)-trione 
• 1361131-95-4 2-(4-methylphenethyl)benzaldehyde 
• 1361132-04-8 C₂₂H₂₂N₂O₃ 
• 321534-83-2 methyl 2-(4-methylphenethyl)benzoate 
• 1357469-16-9 4-methylbenzyl 2-[(4-methylphenyl)ethynyl]benzoate 
• 1357469-17-0 (2E)-3-phenylprop-2-en-1-yl 2-[(4-methylphenyl)ethynyl]benzoate 
• 1357469-18-1 benzyl 2-[(4-methylphenyl)ethynyl]benzoate 
• 1357469-27-2 3-(4-methylphenyl)-4-[(2E)-3-phenylprop-2-en-1-yl]-1H-isochromen-1-one 
• 1357469-29-4 4-benzyl-3-(4-methylphenyl)-1H-isochromen-1-one 
• 105279-21-8 (Z)-3-(4-methyl-benzylidene)-3H-isobenzofuran-1-one 
• 1314961-19-7 4-(phenylselanyl)-3-(p-tolyl)-1H-isochromen-1-one 

Relevant articles and documents

Continuous Electrochemical Synthesis of Iso-Coumarin Derivatives from o-(1-Alkynyl) Benzoates under Metal- and Oxidant-Free

A non-oxidant and metal-free strategy for synthesizing iso-coumarin by using a continuous electrochemical microreactor to initiate an oxidative cyclization reaction of o-(1-alkynyl) benzoate and radicals. This efficient and clean continuous electrosynthesis method not only avoids the complicated gas protection operation and production of by-products in the batch processes, but also help to overcome the difficulty that batch metal catalysis and electrocatalysis are difficult to scale up, and has the potential for pilot-scale experiment.

Metal-Free Synthesis of 4-Chloroisocoumarins by TMSCl-Catalyzed NCS-Induced Chlorinative Annulation of 2-Alkynylaryloate Esters

4-Chloroisocoumarins can be conveniently prepared from 2-alkynylaryloate esters via the activation of alkynes by electrophilic chlorine, generated in situ from N-chlorosuccinimide (NCS) in the presence of 10 mol % trimethylsilyl chloride (TMSCl), which leads to 6-endo-dig-selective chlorinative annulation to give the desired products in moderate to quantitative yields. The procedure employs readily available reagents and can be conveniently carried out on a wide scope of substrates under mild conditions (0 °C to rt). Furthermore, the reaction is scalable for gram-scale preparation of 4-chloroisocoumarins. Additionally, 4-bromo- and 4-iodoisocoumarins can be prepared in moderate to good yields by replacing NCS with N-bromosuccinimide (NBS) and N-iodosuccinimide (NIS), respectively.

Divergent Syntheses of (Z)-3-Alkylideneisobenzofuran-1(3 H)-ones and 1 H-Isochromen-1-ones by Copper-Catalyzed Cycloisomerization of 2-Alkynylbenzoic Acids in Ionic Liquids

The cycloisomerization of readily available 2-alkynylbenzoic acids 1 in ionic liquids (ILs) as recyclable reaction media has been studied under the catalytic action of CuCl2. With substrates bearing an aryl group on the triple bond, a mixture o