Acetaldehyde, (2-phenyl-4H-1-benzopyran-4-ylidene)-

Base Information

Chemical Name:Acetaldehyde, (2-phenyl-4H-1-benzopyran-4-ylidene)-
CAS No.:20399-90-0
Molecular Formula:C₁₇H₁₂O₂
Molecular Weight:248.281
Hs Code.:

Synonyms:

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Chemical Property of Acetaldehyde, (2-phenyl-4H-1-benzopyran-4-ylidene)-

Chemical Property:

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MSDS Files:: SDS file from LookChem

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Technology Process of Acetaldehyde, (2-phenyl-4H-1-benzopyran-4-ylidene)-

There total 1 articles about Acetaldehyde, (2-phenyl-4H-1-benzopyran-4-ylidene)- which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

: 6272-41-9
2-phenylchromenylium perchlorate

: 121-44-8
triethylamine

: 20399-90-0
(2-phenylbenzopyran-4-ylidene)acetaldehyde

Guidance literature:: With iodine; potassium carbonate; Yield given. Multistep reaction; 1) acetonitrile, steam bath, 5 min, 2) water, heating, 0.5 h;
DOI:10.1021/jo00189a004

Reference yield: 65.0%

: (methoxy(methyl)methylidene)pentacarbonyltungsten

: 20399-90-0
(2-phenylbenzopyran-4-ylidene)acetaldehyde

: W(CO)5C(OCH₃)(CHCHCHC₅HO(C₆H₅)(CH)4)

Guidance literature:: With chloro-trimethyl-silane; triethylamine; In tetrahydrofuran; under N2 atm. using Schlenk techniques; heterocyclic aldehyde added to THF under stream of N2; Et3N, Me3SiCl and methoxy carbene were added to stirred soln. at room temp.; monitored by chromy.; quenched with iced and de-gassed water under stream of N2; extd. (Et2O); dried (MgSO4); solvents removed (vac.); residue purified by layer chromy. on silica gel;
DOI:10.1016/j.jorganchem.2005.07.049

Reference yield: 17.0%

: (methylthiophenylcarbene)pentacarbonyl tungsten⁽⁰⁾

: 20399-90-0
(2-phenylbenzopyran-4-ylidene)acetaldehyde

: C₆H₅C₅HO(CH)7C(SC₆H₅)W(CO)5

Guidance literature:: With (CH₃)3SiCl; Et₃N; In tetrahydrofuran; (N2), soln. of aldehyde with 1 equiv. of W complex, 3 equiv. of (CH3)3SiCl and 3 equiv. of Et3N in THF stirred at room temp.; treated with H2O, extd.(Et2O), ext. dried (MgSO4), evapd.(vac.), chromy.(silica gel - petroleum ether/CH2Cl2 70:30), evapd., crystd.(Et2O/petroleum ether), elem. anal.;
DOI:10.1002/ejic.200600300