- Ultrasound promoted synthesis of (±)-8-hydroxy-5-isopropyl-8-methyl- 6(E)-nonen-2-one ((±)-solanone hydrate) and 3,7-dimethyl-2(E),7- octadienylpropionate
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A facile synthesis of the title compounds has been accomplished using Zn-Cu couple catalyzed conjugate addition of allylic halides to α,β- unsaturated ketones initiated by ultrasonic waves under aqueous conditions and Horner-Wittig reaction using ethyl α-dimethylphosphonoacetate and NaH as base in dry THF as the key steps in overall good yields.
- Singh, Vasundhara,Chaudhary, Sangeeta,Sapehiyia, Varinder,Kaur, Irvinder,Kad, Goverdhan Lal,Singh, Jasvinder
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p. 1950 - 1953
(2007/10/03)
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- Tobacco Chemistry. 70. Six New Cembrane-Derived Compounds from Tobacco
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Six new compounds of probable cenbrane origin have been isolated from Greek tobacco.They have been identified as (E)-5-hydroxy-5-isopropylhept-3-en-2-one (1), (E)-4-isopropyl-7-oxooct-5-en-4-olide (2), (2E,6E)-5-isopropyl-2-methyl-8-oxonona-2,6-dienal (3), (E)-4-hydroxy-7-isopropyl-4-methylundec-5-ene-2,10-dione (4), (E)-3-hydroxy-6-isopropyl-3-methyl-9-oxodec-4-enoic acid (5) and (3E,7E)-6-hydroxy-9-isopropyl-6-methyltrideca-3,7-diene-2,12-dione (6) by spectral methods and synthesis (1, 2, 4-6).The biogenesis of 1-6 is discussed.
- Wahlberg, Inger,Eklund, Ann-Marie,Enzell, Curt R.
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p. 504 - 512
(2007/10/02)
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- Flavoring and perfuming ingredients
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Various compounds are disclosed to be useful in the flavoring of foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products. These compounds are equally useful perfuming ingredients.
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