N-Amyl cinnamate

CATALYTIC SYNTHESIS OF N-AMYL CINNAMATE WITH TiSiWnO oH iOi... 

The catalytic activities of TiSiWijO iOj in synthesizing n-amyl cinnamate are reported. It has been demonstrated that TiSiWi204i/Ti02 is an excellent catalyst. Various factors concerned in this reaction have been investigated. The optimum conditions have been found. That is, the molar ratio of alcohol to acid is 4 1 the mass ratio of the catalyst used to the reactants is 2.0 %, the reaction temperature 122-126 °C, and the reaction time 1.5 h. Under this condition, the yield of n-amyl cinnamate is 93.3 %. 

A purified product was analyzed by means of IR speetrum. The IR spectrum shows peaks at 1714 cm (=C=0) and 1310, 1171cm (C-O-C) which are in accordance with those in the standard IR spectrum of n-amyl cinnamate, nu =1.5370. 

Synonyms a-Amyl cinnamic alcohol n-Amyl cinnamic alcohol 2-Amyl-3-phenyl-2-propen-1-ol 2-Benzylidene-heptanol 2-Benzylidene-1-heptanol... 

Successful results have been obtained (Renfrew and Chaney, 1946) with ethyl formate methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec.-butyl and iso-amyl acetat ethyleneglycol diacetate ethyl monochloro- and trichloro-acetates methyl, n-propyl, n-octyl and n-dodecyl propionates ethyl butyrate n-butyl and n-amyl valerates ethyl laurate ethyl lactate ethyl acetoacetate diethyl carbonate dimethyl and diethyl oxalates diethyl malonate diethyl adipate di-n-butyl tartrate ethyl phenylacetate methyl and ethyl benzoates methyl and ethyl salicylates diethyl and di-n-butyl phthalates. The method fails for vinyl acetate, ieri.-butyl acetate, n-octadecyl propionate, ethyl and >i-butyl stearate, phenyl, benzyl- and guaicol-acetate, methyl and ethyl cinnamate, diethyl sulphate and ethyl p-aminobenzoate. 

Cinnamomum zeglanicum Blume Ceylon Rou Gui (Ceylon cinnamon) (bark) Cinnamic aldehyde, p-cymene, hydrocinnamic aldehyde, pinene, benzaldehyde, cuminic aldehyde, nonylic aldehyde, eugenol, caryophyllene, 1-phellandrine, methyl-n-amyl ketone, 1-linalool.60 Stimulant to digestion, respiration, circulation. 

From Table 4 we can obtain the following conclusion all of the catalysts have certain catalytic activities for this reaction. The catalytic activity of TiSiW,204o/Ti02 is the highest among all the catalysts. The results imply that the catalytic activities of TiSiW,204o/Ti02 for the esterification of cinnamic acid with n-amyl alcohol are related to the acidity of the heteropolyacids. 

Synonyms Amyl cinnamic acetate a-N-Amyi-p-phenyiacryi acetate Cinnamyi aicohol, a-pentyi, acetate 1-Heptanol, 2-benzyiidine-, acetate a-Pentyi cinnamyi acetate 2-(Phenylmethylene) heptyl acetate Empiricai C16H22O2 Properties M.w. 246.35... 

Allyl caproate Allyl cinnamate Allyl cyclohexaneacetate Allyl cyclohexanebutyrate Allyl cyclohexanehexanoate Allyl cyclohexanepropionate Allyl cyclohexanevalerate Allyl disulfide Allyl 2-ethy I butyrate Allyl heptanoate Allyl a-ionone Allyl isothiocyanate Allyl isovalerate Allyl mercaptan Allyl nonanoate Allyl octanoate Allyl phenoxyacetate Allyl phenylacetate Allyl propionate Allyl sorbate Allyl sulfide Allyl tiglate Allyl 10-undecenoate Ambrettolide Ammonium isovalerate Ammonium sulfide Amyl acetate n-Amyl alcohol Amyl butyrate o-Amylcinnamaldehyde a-Amylcinnamaldehyde dimethyl acetal a-Amylcinnamyl acetate o-Amylcinnamyl alcohol a-Amylcinnamyl formate a-Amylcinnamyl isovalerate Amyl formate Amyl 2-furoate Amyl heptanoate Amyl hexanoate Amyl octanoate Amyl salicylate p-Anisaldehyde Anisole p-Anisyl acetate p-Anisyl alcohol Anisyl butyrate Anisyl formate Anisyl phenylacetate Anisyl propionate Benzaidehyde... 

Methyl n-amyl ketone Methyl anthranilate Methyl benzoate a-Methylbenzyl acetate a-Methylbenzyl alcohol Methyl cinnamate 3-Methyl-2-cyclopenten-2-ol-1-one 6-Methyl-3,5-heptadien-2-one Methyl a-ionone Methyl isoeuqenol Methyl laurate 1-Methyl-1-methoxycyclododecane Methyl 2-nonenoate Methyl nonyl acetaldehyde Methyl 2-octynoate Methyl pelarqonate Methyl phenylacetate Methyl salicylate Methyl tiqiate Methylundecanal dimethyl acetal Myrcene Nerol... 

Figure 2. Temperature dependence of density, and thermal expansion coefficient for fi-amyl 4-(4-n-dodecyloxybenzylidene-amino)cinnamate. Adapted Irom Demus and Rurainski [48].

The SRP N = 25) evaluated all of the solutions described in Experiment 1 by using the audio method for intensity profiling [6]. Two procedures, defined by Lawless et al. [3] as either simple contrast or reversed-pair contrast, were followed, with the exception that only one combination of procedure and condition occurred in any given session. Thus, for the contrast procedure either condition HM or condition LM was used for the reversed-pair procedure, either condition MH or ML. Samples (15mL) were served under red lighting in plastic cups coded with three-digit numbers. Panelists emptied the entire contents of each sample into their mouths and swallowed the solutions. The descriptors for which retronasal flavor intensity was measured were candy (amyl acetate), green (c -3-hexenol), fruity (ethyl butyrate), linalool (linalool), and cinnamon metallic (methyl cinnamate). 

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