Microscale chemistry like this isn't particularly scaleable. 75 ml may have been just a convenient amount of solvent; it does not necessarily indicate that this reaction must bee performed at high dilution. Even the authors themselves, if scaling up, would make do with less than a 57-fold excess of zinc dust.
Monograph number: 2362
Title: Cinnamyl Alcohol.
CAS Registry number: [104-54-1]
CAS name(s): 3-Phenyl-2-propen-1-ol
Additional name(s): cinnamic alcohol; styryl carbinol; gamma-phenylallyl
Molecular formula: C9H10O
Molecular weight: 134.18
Percent Composition: C 80.56%, H 7.51%, O 11.92%
Line Formula: C6H5-CH=CH-CH2OH
Literature references: Occurs (in the esterified form) in storax and in balsam Peru, cinnamon leaves, hyacinth oil. Obtained by the alkaline hydrolysis of storax.
Prepd synthetically by reducing cinnamal diacetate with iron filings and acetic acid; from cinnamaldehyde by Meerwein-Ponndorf reduction with aluminum isopropoxide: Meerwein, Schmidt, Ann. 444, 221 (1925).
Properties: Needles or cryst mass. Odor of hyacinth. mp 33°. d3535 1.0397. bp1.0 72.6°; bp5 102.5°; bp10 117.8°; bp20 133.7°; bp40 151.0°; bp60 162.0°; bp100 177.8°; bp200 199.8°; bp400 224.6°; bp760 250.0°. nD20 1.58190; nD33 1.57580.
When small amounts of impurities are present as in the natural article (cinnamyl alcohol from storax), it remains fluid at lower temps than the melting point. Minimum congealing points specified by the Essential Oil Assn are: 33.0° for cinnamic alcohol pure; 28.0° for cinnamic alcohol prime; 20.0° for cinnamic alcohol from storax. Is oxidized slowly on exposure to heat, light and air.
Sol in water, glycerol. Clearly sol in 3 vols 50% alc. Freely sol in alc, ether, other common organic solvents.
Density: d3535 1.0397
Boiling point: bp1.0 72.6°; bp5 102.5°; bp10 117.8°; bp20 133.7°; bp40 151.0°; bp60 162.0°; bp100 177.8°; bp200 199.8°; bp400 224.6°; bp760 250.0°.
Melting Point: 33°.
Refraction index: nD20 1.58190; nD33 1.57580
USE: In perfumery; as deodorant in 12.5% soln in glycerol.
Now find me one that makes piperic acid into safrole, and I'll bee impressed.
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1000000 heads high