3-ETHYL-l-HEXYNE

Ethylenedioxybutyl)-3-trichloro-acetamido-l-cyclohexene, 58, 9, 11 Ethylene glycol, 56, 44 Ethyl a-fluoro-l-naphthaleneacetate, 57, 73 Ethyl 2-fluoropropanoate, 57, 73 3-Ethylhexane, 58, 3, 4 3-ETHYL-l-HEXYNE, 58, 1, 2, 3, 4 Ethylidenecyclohexane, 59, 46 Ethyliodide, 59, 133 Ethyl 2-iodo-3-nitropropionate, 56,65 Ethyl isocyanide, 55, 98 Ethyl isocyanoacetate, 59,184 l-Ethyl-4-isopropylbenzene, 55,10 Ethyl levulinates, 5-substituted, 58, 81 ETHYL 2-METHYL1NDOLE-5CARBOXY-LATE, 56, 72... 

Acetylenic compounds have been described for inhibition in acid solutionsTypical inhibitors include 2-butyne-l,4-diol, l-hexyne-3-ol and 4-ethyl-l-octyne-3-ol. 

The /3-trimethyltin-substituted alkenylborane 36 was prepared in situ by treatment of triethylborane with 1-lithio-l-hexyne to form the lithium 1-alkynyltriethyl-borate 35 followed by trimethyltin chloride (Scheme 20.9) [37]. The trimethyltin chloride-induced migration of an ethyl group from boron to the adjacent acetylenic carbon is stereoselective with the boron and the tin substituents in 36 cis to each... 

A stereospecific synthesis for cw-3-hexen-l-ol starts with the ethylation of sodium acetylide to 1 -butyne, which is reacted with ethylene oxide to give 3-hexyn-l-ol. Selective hydrogenation of the triple bond in the presence of palladium catalysts yields cw-3-hexen-l-ol. Biotechnological processes have been developed for its synthesis as a natural flavor compound, e.g., [12]. 

C7H12 5-methyl-l-hexyne 2203-80-7 149.15 13.337 2 11730 C7H14 3-ethyl-1-pentene 4038-04-4 145.67 5.020 1... 

To avoid the polymerization initiated by abstraetion of the a-hydrogen atom, Ramehandran et al. have foeused their attention on aryl tiifluoromethyl ketones. By eonsidering the match between the reactivities of the olefin and carbonyl partners, they succeeded in accomplishing the MBH reaction between moderately reactive electrophile e.g. trifluoroacetophenone, trifluoroacetylthiophene, 3-tiifluoroacetyl-indole, 2-chloro-2,2-difluoroacetophenone, 1,1,1 -trifluoro-4-phenyl-3-butyn-2-one and 4,4,5,5,6,6,6-heptafluoro-l-phenyl-l-hexyn-3-one) with moderately reactive olefins e.g. ethyl acrylate and acrylonitrile) in the presence of DABCO in high yields (Chapter 2.2.1). ... 

The cumulation reactions, which start from carboxylic acids and esters usually lead to the formation of pyrone derivatives. Methyl (Z)-3-iodoacrylate and 3-hexyne gave, for example, 5,6-diethyl-2-pyrone in acceptable yield (4.38.). Inclusion of the acrylate into a six membered ring starting from ethyl 2-bromocyclohexen-l-carboxylate, led to a condensed ring system, giving a partially reduced isocoumarin derivative.50... 

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