7299-42-5Relevant academic research and scientific papers
Lithium-potassium superbases as key reagents for the base-catalysed isomerisation of some terpenoids
Deagostino,Tivola,Prandi,Venturello
, p. 2856 - 2860 (2007/10/03)
Some representative monoterpenes have been isomerised under the influence of Schlosser's lithium-potassium mixed superbases, promoting β-elimination reactions. The results are compared with those obtained with butyllithium and LDA. Different selectivities and different reaction yields are achieved as a function of the base employed. These results confirm the particular reactivity of bimetallic reagents. In this paper it is proposed that the observed selectivities might depend on the conformational features of the substrate, on the strength of the organometallic reagent, as well as on steric requirements of the elimination reaction.
Chemistry Around δ-Terpineol
Bull, Steven D.,Carman, Raymond M.
, p. 1869 - 1880 (2007/10/02)
Bromination, hydroboration, epoxidation, 1,2-dihydroxylation and acidification reactions upon δ-terpineol are described.
δ-Terpineol
Bull, Steven D.,Carman, Raymond M.
, p. 2077 - 2081 (2007/10/02)
An improved and simple synthesis of crystalline δ-terpineol from β-pinene is reported.
CHEMISTRY OF THE ORGANOSILICON COMPOUNDS-165 2-TRIMETHYLSILYL-METHYL-1, 3-BUTADIENE-A VERSATILE BUILDING BLOCK FOR TERPENE SYNTHESIS
Sakurai, Hideki,Hosomi, Akira,Saito, Masaki,Sasaki, Koshi,Iguchi, Hirokazu,et al.
, p. 883 - 894 (2007/10/02)
Two types of synthetically useful reactions of 2-trimethylsilylmethyl-1,3-butadiene (7) are discussed.Reactions of 7 with acid chlorides, aldehydes, ketones and acetals activated by a Lewis acid give isoprenylated compounds, while 7 undergoes the Diels-Alder reaction whit dienophiles.High regiospecificity of the reaction qualifies 7 for a versatile building block of terpene synthesis.
HIGHLY REGIOSELECTIVE DIELS-ALDER REACTIONS OF 2-TRIMETHYLSILYLMETHYL-1,3-BUTADIENE CATALYZED BY A LEWIS ACID AND APPLICATIONS TO SYNTHESES OF TERPENES
Hosomi, Akira,Iguchi, Hirokazu,Sasaki, Jun-ichi,Sakurai, Hideki
, p. 551 - 554 (2007/10/02)
2-Trimethylsilylmethyl-1,3-butadiene undergoes highly regioselective Diels-Alder reactions with dienophiles such as acrolein and methyl vinyl ketone catalyzed by aluminium chloride in which the "para" isomers are obtained almost exclusively.The adducts are converted readily to a variety of naturally occurring mono and sesquiterpenes.
Cyclobutane Ring Opening of Pin-2(10)-ene with Mercury(II) Salts. A New, High-yield Synthesis of p-Mentha-1,8-dien-7-ol
Bluthe, Norbert,Ecoto, Jules,Fetizon, Marcel,Lazare, Sylvain
, p. 1747 - 1751 (2007/10/02)
The nucleophilic attack of pin-2(10)-ene-mercury(II) complex systems by water results in the opening of the four-membered ring leading to an allylic organomercury(II) derivative (11) with the p-menthane skeleton.This intermediate can be reduced by hydride to p-menth-1(2)-en-8-ol (6a) or can undergo an in situ SE2' elimination yielding p-menth-1(7)-en-8-ol (9a), in high yields. (-)-2,10-Epoxypinane (15) reacts with mercury(II) salts at room temperature, giving the diol (16) in a quantitative yield.Compound (16) is a suitable intermediate for convenient preparation of p-mentha-1,8-dien-7-ol (17) and its derivatives.
