摘要:
Provided is a geometrically selective method for producing (±)-(E)-2-isopropyl-5-methyl-3,5-hexadienyl acetate, which is a sex pheromone of grape pineapple mealybug (GPMB). Specifically provided is a method for producing a an (E)-2-isopropyl-5-methyl-3,5-hexadienyl carboxylate compound (4), the method comprising the steps of: dehydrating a 3-hydroxy-2-isopropyl-5-methyl-4-hexenoate compound (1) to obtain an (E)-2-isopropyl-5-methyl-3,5-hexadienoate compound (2); reducing the alkoxycarbonyl group of the compound (2) to obtain (E)-2-isopropyl-5-methyl-3,5-hexadienol (3); and esterifying the compound (3) to obtain the compound (4).
摘要:
Target compounds are synthesized simply, efficiently and selectively. More specifically, provided are a method for producing (2,4,4-trimethyl-1-cyclohexene)carbaldehyde, comprising the steps of: reacting the carbonyl group of 2,4,4-trimethyl-2-cyclohexenone (1) to obtain a 2,4,4-trimethyl-2-cyclohexenylidenemethyl ether compound (2) and hydrolyzing Compound (2) to obtain the (2,4,4-trimethyl-1-cyclohexene)carbaldehyde (3); a method for producing (2,4,4-trimethyl-1-cyclohexene)methanol, comprising a step of reducing Compound (3) to obtain the (2,4,4-trimethyl-1-cyclohexene)methanol (4); and a method for producing a (2,4,4-trimethyl-1-cyclohexenyl)methyl ester compound, comprising a step of esterifying Compound (4) to obtain the (2,4,4-trimethyl-1-cyclohexenyOmethyl ester compound (5).
摘要:
A targeted compound is produced simply, efficiently and selectively. Specifically provided are a method for producing (2,4,4-trimethyl-2-cyclohexene)methanol, comprising the steps of: reacting the carbonyl group of 2,4,4-trimethyl-2-cyclohexenone (1) to obtain 1-methylene-2,4,4-trimethyl-2-cyclohexene (2) and reacting the exocyclic double bond of Compound (2) to obtain the (2,4,4-trimethyl-2-cyclohexene)methanol (3); and a method for producing a (2,4,4-trimethyl-2-cyclohexenyl)methyl ester compound, comprising a step of esterifying Compound (3) to obtain the (2,4,4-trimethyl-2-cyclohexenyl)methyl ester compound (4).
摘要:
Provided is a simple, selective and efficient method for producing 4-alkyl-3-methylenebutyl carboxylates such as 7-methyl-3-methylene-7-octenyl propionate. More specifically, provided is, for example, a method for producing a 4-alkyl-3-methylenebutyl carboxylate compound, comprising an acyloxylation step of subjecting a 1-(2-haloethyl)cyclopropyl sulfonate compound (1) to acyloxylation to obtain a 1-(2-acyloxyethyl)cyclopropyl sulfonate compound (2), a halogenation step of subjecting the compound (2) to halogenation involving cyclopropyl-allyl rearrangement to obtain a 3-halomethyl-3-butenyl carboxylate compound (3), and a coupling step of subjecting the compound (3) to a coupling reaction with an organometallic reagent (4) to obtain the 4-alkyl-3-methylenebutyl carboxylate compound (5).
摘要:
Provided is a simple, selective and efficient method for producing 7-methyl-3-methylene-7-octenyl propionate and the like. More specifically, provided is, for example, a method for producing 7-methyl-3-methylene-7-octenyl propionate, comprising the steps of: subjecting a nucleophile represented by Formula (1) and an electrophile represented by Formula (2) to a coupling reaction to obtain a 7-methyl-3-methylene-7-octenyl halide represented by Formula (3), and subjecting the 7-methyl-3-methylene-7-octenyl halide (3) to propionyloxylation to obtain the 7-methyl-3-methylene-7-octenyl propionate represented by Formula (4).
摘要:
Provided is a process for producing 3,5-dimethyldodecanoic acid, which is an active ingredient of the pheromone of California prionus, and 4-carboxy-3,5-dimethyl-3,5-dodecadienoic acid which is an intermediate useful for producing 3,5-dimethyldodecanoic acid. More specifically, provided is a method for producing 3,5-dimethyldodecanoic acid, comprising the steps of subjecting 3-methyl-2-pentene-1,5-diacid diester (1) and 2-nonanone (2) to a condensation reaction and subsequent hydrolysis into 4-carboxy-3,5-dimethyl-3,5-dodecadienoic acid (3); decarboxylating or decarboxylating and hydrolyzing the 4-carboxy-3,5-dimethyl-3,5-dodecadienoic acid (3) into 3,5-dimethyl-2,4-dodecadienoic acid (4); and hydrogenating the 3,5-dimethyl-2,4-dodecadienoic acid (4) into 3,5-dimethyldodecanoic acid (5), as shown in the following scheme:
摘要:
A positive resist material contains a base polymer containing: a repeating unit having two carboxyl groups whose hydrogen atoms are substituted with two tertiary carbon atoms each bonded to a double bond or triple bond; and a repeating unit having an acid generator shown by any of the following formulae (b1) to (b3). Thus, the present invention provides: a positive resist material having higher sensitivity than conventional positive resist materials, and smaller dimensional variation; and a patterning process using this inventive positive resist material.
摘要:
A process for preparing 4-penten-2-ynal of the following formula (2): CH2═CHC≡CCHO (2) the process comprising a step of hydrolyzing a 5,5-dialkoxy-1-penten-3-yne compound of the following general formula (1): CH2═CHC≡CCH(OR1)(OR2) (1) wherein R1 and R2 represent, independently of each other, a monovalent hydrocarbon group having 1 to 15 carbon atoms, preferably 1 to 8, more preferably 1 to 4, or R1 and R2 may be bonded to each other to form a divalent hydrocarbon group, R1-R2, having from 2 to 10 carbon atoms, to obtain 4-penten-2-ynal (2).
摘要:
The present invention provides a process for preparing a dimethylcyclobutane compound of the following general formula (1A), the process comprising reacting a dimethylcyclobutanone compound of the following general formula (2) with a phosphonic ester compound of the following general formula (3) to produce an unsaturated ester compound of the following general formula (4), having a dimethylcyclobutane ring, and subjecting the unsaturated ester compound (4), having a dimethylcyclobutane ring, to a reduction reaction to produce the dimethylcyclobutane compound (1A).
摘要:
Provided are an insect pest-targeting gel composition causing neither leakage nor reaction of a volatile substance and capable of releasing the volatile substance at a constant rate; and a sustained release preparation including the insect pest-targeting gel composition. More specifically, provided is an insect pest-targeting gel composition including one or more volatile substances and an oil gelling agent, wherein the volatile substance is included in an amount of from 70.0 to 99.0% by weight by the insect pest-targeting gel composition.