Methyl 2-(dihydro-2H-pyran-4(3H)-ylidene)acetate

Base Information

• Chemical Name: Methyl 2-(dihydro-2H-pyran-4(3H)-ylidene)acetate
• CAS No.: 138302-49-5
• Molecular Formula: C8H12O3
• Molecular Weight: 156.181
• Hs Code.: 2932999099
• Mol file: 138302-49-5.mol

Synonyms:Acetic acid,(tetrahydro-4H-pyran-4-ylidene)-,methyl ester;(tetrahydropyrane-4-ylidene)acetic acid methyl ester;methyl tetrahydro-4H-pyran-4-ylidene acetate;(tetrahydropyran-4-ylidene)acetic acid methyl ester;

Chemical Property of Methyl 2-(dihydro-2H-pyran-4(3H)-ylidene)acetate

Chemical Property:

• PSA: 35.53000
• LogP: 0.89620

Purity/Quality:

98% ^*data from raw suppliers

Methyl2-(Oxan-4-ylidene)acetate ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of Methyl 2-(dihydro-2H-pyran-4(3H)-ylidene)acetate

There total 4 articles about Methyl 2-(dihydro-2H-pyran-4(3H)-ylidene)acetate 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: 96.3%

Tetrahydro-4H-pyran-4-one (29943-42-8,143562-54-3) + methyl (triphenylphosphoranylidene)acetate (21204-67-1,2605-67-6) → methyl 2-(dihydro-2H-pyran-4-(3H)-ylidene)acetate (138302-49-5)

Guidance literature:

With benzoic acid; In toluene; for 8h; Heating;

DOI:10.1039/b209990j

Reference yield: 88.0%

Tetrahydro-4H-pyran-4-one (29943-42-8,143562-54-3) + trimethyl phosphonoacetate (5927-18-4) → methyl 2-(dihydro-2H-pyran-4-(3H)-ylidene)acetate (138302-49-5)

Guidance literature:

With sodium hydride; In tetrahydrofuran; at 0 - 25 ℃; for 19.6666h; Inert atmosphere;

DOI:10.1071/CH14586

Reference yield:

Tetrahydro-4H-pyran-4-one (29943-42-8,143562-54-3) + carbomethoxy triphenylphosphonium bromide → methyl 2-(dihydro-2H-pyran-4-(3H)-ylidene)acetate (138302-49-5)

Guidance literature:

With sodium hydride; In tetrahydrofuran; for 18h; Heating / reflux;

upstream raw materials:

Tetrahydro-4H-pyran-4-one

methyl (triphenylphosphoranylidene)acetate

(methyloxycarbonylmethyl)triphenylphosphonium bromide

trimethyl phosphonoacetate

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