26643-91-4 Usage
Description
4-Methyl-2-phenyl-2-pentenal has a cocoa aroma. It is often used
in chocolate and cocoα-type flavors. May be prepared by aldolic
condensation of the corresponding aldehydes in the presence of a
basic catalyst.
Chemical Properties
4-Methyl-2-phenyl-2-pentenal has a cocoa aroma. It is often used in chocolate and cocoa-type flavors.
Occurrence
Reported found in baked and fried potato, peppermint oil, cocoa, black tea, roasted filberts, potato chips,
sesame seed and malt
Preparation
By aldolic condensation of the corresponding aldehydes in the presence of a basic catalyst
Taste threshold values
Taste characteristics at 20 ppm: floral, sweet, waxy and cocoa-like with a honey nuance
Check Digit Verification of cas no
The CAS Registry Mumber 26643-91-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,6,4 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 26643-91:
(7*2)+(6*6)+(5*6)+(4*4)+(3*3)+(2*9)+(1*1)=124
124 % 10 = 4
So 26643-91-4 is a valid CAS Registry Number.
InChI:InChI=1/C12H14O/c1-10(2)8-12(9-13)11-6-4-3-5-7-11/h3-10H,1-2H3/b12-8-
26643-91-4Relevant articles and documents
Manganese-Catalyzed Dual-Deoxygenative Coupling of Primary Alcohols with 2-Arylethanols
Wang, Yujie,Shao, Zhihui,Zhang, Kun,Liu, Qiang
supporting information, p. 15143 - 15147 (2018/11/01)
Reported herein is a general and efficient dual-deoxygenative coupling of primary alcohols with 2-arylethanols catalyzed by a well-defined Mn/PNP pincer complex. This reaction is the first example of the catalytic dual-deoxygenation of alcohols using a non-noble-metal catalyst. Both deoxygenative homocoupling of 2-arylethanols (17 examples) and their deoxygenative cross-coupling with other primary alcohols (20 examples) proceeded smoothly to form the corresponding alkenes by a dehydrogenation and deformylation reaction sequence.
