Hydrocinnamyl alcohol

Reduction of the double bond only was achieved by catalytic hydrogenation over palladium prepared by reduction with sodium borohydride. This catalyst does not catalyze hydrogenation of the aldehyde group [31]. Also sodium borohydride-reduced nickel was used for conversion of cinnamaldehyde to hydrocinnamaldehyde [31]. Homogeneous hydrogenation over tris(triphenylphosphine)rhodium chloride gave 60% of hydrocinnamaldehyde and 40% of ethylbenzene [5(5]. Raney nickel, by contrast, catalyzes total reduction to hydrocinnamyl alcohol [4S. Total reduction of both the double... 

Although the bioassay of racemic parasorbic acid showed good activity (wheat seed root growth was 50% inhibited with 0.25 mg/mL), the conclusion that little of the growth-retardant activity in cranberry leaves can be accounted for by parasorbic acid was confirmed by examination of Devlin s extract. In this case neither parasorbic acid nor its glucoside was present. Subsequent work by Hussain (12) has resulted in the isolation of two plant growth inhibitors identified as cinnamyl alcohol and 3-pheny1-1-propanol (hydrocinnamyl alcohol). 

The best reagents for reduction of olefinic aldehydes to olefinic alcohols are lithium aluminum hydride and sodium borohydride. Crotyl alcohol, CHjCH = CHCHjOH, and cinnamyl alcohol, CjH,CH =CHCHjOH, have been prepared in excellent yields. Cinnamyl alcohol is further reduced at higher temperatures to hydrocinnamyl alcohol. Citral, (CHj)jC =CHCHjCHjC(CH3)=CHCHO, may be selectively reduced to the ctOTesponding dienol by catalytic hydrogenation over platinum catalyst. A new method for the preparation of enediol esters of the type... 

The carbon carbon double bond of certain compounds can also be reduced by LiAlH4.—E Cinnamyl alcohol refluxed 2 hrs. in ether with LiAlH, hydrocinnamyl alcohol. Y 93%. (F. e. s. F. A. Hochstein and W. G. Brown, Am. Soc. 70, 3484 (1948).)... 

Hydrocinnamyl alcohol (3-phenyl-1-propanol). H5C6-CH2-CH2-CH2OH, C9H.20, Mr 136.19. Liquid with a pleasantly sweet, reseda-like odor, bp. 253 °C, bp. 119°C (1.6 kPa), soluble in water and alcohol. H. esteriiied with cinnamic acid occurs in benzoin gum, peru balsam and storax. H. is used in many fragrances. 

Phenylethyl isothiocyanate see mustard oils. 3-Phenyl-l-pro >anol see hydrocinnamyl alcohol. 3-Ptienylpropyl cinnamate see storax (oil). Phenylpyruvic acid (2-oxo-3-phenylpropanoic acid). 

Composition S. balsam consists of up to ca. 50% tri-terpene acids, and more than 45% of cinnamyl cinna-mate (see cinnamic acid) and 3-phenylpropyl cinna-mate (a) (CigHigOj, Mr 266.34), together with small amounts of more volatile compounds such as cinna-myl alcohol and hydrocinnamyl alcohol. The typical odor notes of S. are determined mainly by the trace content of styrene (b) (CgH, Mr 104.15). 

Hydrocinnamyl alcohol 1-Hydroxy-3-phenylpropane (3-Hydroxypropyl) benzene Phenethyl carbinol Phenylethyl carbinol Phenyl-1-propanol 3-Phenylpropanol 3-Phenyl-1-propanol 3-Phenylpropan-1-ol 3-Phenyl-n-propanol... 

Hydrocinnamyl Alcohol ( -Phenyl-n-propyl alcohol, Z phtnylpropcmohX, y-hydreaeypropyl-beruene)... 

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