71777-34-9Relevant academic research and scientific papers
Hydrolytic kinetic resolution of terminal mono- and bis-epoxides in the synthesis of insect pheromones
Chow, Sharon,Kitching, William
, p. 779 - 793 (2007/10/03)
Hydrolytic kinetic resolution (HKR) of functionalised epoxides using (salen)Co(OAc) complexes provides enantiomerically enriched epoxides and diols, which have been transformed into important insect sex pheromones. In this general approach, (-)-(R)- and (+)-(S)-10-methyldodecyl acetates from the smaller tea tortrix moth were obtained, as was (-)-(R)-10-methyltridecan-2-one from the southern corn rootworm. The (S)-epoxide obtained from undec-1-en-6-yne was transformed to (-)-(R)-(Z)-undec-6-en-2-ol (Nostrenol) from ant-lions. HKR of appropriate bisepoxides was also investigated, and transformations of the resulting bisepoxides and epoxydiols provided (-)-(1R,7R)-1,7-dimethylnonylpropanoate from corn rootworms, (-)-(6R,12R)-6,12-dimethylpentadecan-2-one from the female banded cucumber beetle, and (-)-(2S,11S)-2,11-diacetoxytridecane and (+)-(2S,12S)-2,12-diacetoxytridecane from female pea-midges.
Hydrolytic kinetic resolution of mono- and bisepoxides as a key step in the synthesis of insect pheromones
Chow,Kitching
, p. 1040 - 1041 (2007/10/03)
The synthetic utility of the readily separated epoxides, diols, epoxydiols and tetrols of high enantiomeric excesses, obtained by hydrolytic kinetic resolution (HKR) of functionalised mono- and bisepoxides with (salen)Co(OAc) complexes, is demonstrated by their efficient transformations to important insect pheromones.
Chemoenzymatic synthesis of (R)-(+)-2-methylbutan-1-ol, a chiral synthon for the preparation of optically active pheromones
Geresh, Shimona,Valiyaveettil, Thomas J.,Lavie, Yair,Shani, Arnon
, p. 89 - 96 (2007/10/03)
Optically active (R)-(+)-2-methylbutan-1-ol (which is not commercially available) was prepared by a chemoenzymatic synthesis, in which the key step involved a reduction catalyzed by baker's yeast. The synthon was used in the synthesis of (R)-10-methyldodecan-1-yl acetate, the chiral methyl-branched pheromone of Adoxophyes sp.
Preparation of the Versatile Chiron, (R)- and (S)-12-(Tetrahydropyranyloxy)-3-methyldodecanol: Application to the Syntheses of Methyl Branched Insect Pheromones
Sankaranarayanan, S.,Sharma, A.,Kulkarni, B. A.,Chattopadhyay, S.
, p. 4251 - 4254 (2007/10/02)
A convenient chemoenzymatic synthesis for the title methyl branched chiron has been developed starting from 10-undecenoic acid (1).Thus, 1 was converted to 1-(tetrahydropyranyloxy)-10-undecan-2-one (4) which on reaction with triethyl phosphonoacetate and
Stereospecific Dehydrative Alkylation of Bis-Sulfones: Synthesis of a Lesser Tea Tortrix Pheromone
Yu, Jurong,Cho, Hyun-Sung,Falck, J. R.
, p. 5892 - 5894 (2007/10/02)
The intra- and intermolecular condensation of alcohols with bis-sulfone methylenes, i.e., dehydrative alkylation, using DEAD and Ph3P proceeds stereospecifically at room temperature under essentially neutral conditions affording good to excellent yields o
Pheromones, 76. Synthesis of the Enantiomers of 10-Methyldodecyl Acetate and 12-Methyltetradecyl Acetate, Chiral Pheromone Components of Adoxophyes Species (Lepidoptera: Tortricidae)
Bestmann, Hans Juergen,Frighetto, Rosa T. S.,Frighetto, Nelson,Vostrowsky, Otto
, p. 829 - 831 (2007/10/02)
From enantiomeric (R)-(-)- and (S)-(+)-2-methylbutyl bromide (3), available by resolution of (R)-(-)-phenylglycinol amides of rac-2-methylbutanoic acid, and from enantiomeric 6-methyloctyl bromide (7) the corresponding phosphonium salts were obtained.Wittig olefination yielded the optically active methyl-branched olefinic THP ethers 12 and 13, hydrolysis, catalytic hydrogenation, and acetylation gave rise to the formation of the chiral title compounds (R)-(-)- and (S)-(+)-10-methyldodecyl acetate (1) and (R)-(-)- and (S)-(+)-12-methyltetradecyl acetate (2).
Synthesis of the chiral components of the sex pheromone of Adoxophyes leaf roller moths
Cheskis, B. A.,Moiseenkov, A. M.
, p. 89 - 91 (2007/10/02)
The optically pure (R) and (S) enantiomers of 10-methyldodecyl acetate were synthesized from (R)-5-acetoxy-4-methylpentanoic acid and (S)-2-methylbutanol, respectively, using the condensation of (R)- and (S)-2-methylbutylmagnesium bromides with 8-tosyloxyoctyl acetate in the presence of Li2CuCl4 in the key step.
