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33956-49-9

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33956-49-9 Usage

Description

(8E,10E)-Dodecadien-1-ol is a sex pheromone of Laspeyresia pomonella.

Uses

8,10-DODECADIEN-1-OL is used as organic synthesis intermediates and pharmaceutical intermediates, mainly used in laboratory research and development processes and chemical production processes.

Synthesis

To a mixed so lution of Methyl5-oxo-(E,E)-8,10-dodecadienoate (15.7g, 0.07 mol) and p-toluene sulfonylhydrazine (16.3g, 0.0875 mol) in DMF - sulfolane (350ml, 1 : 1) was added p-toluenesulfonic acid (1.75g) and sodium cyanoborohydride (17.6g, 0.28mol) at room temperature, and the solution was heated at 100 ℃ for 4 hr. After cooling to room temperature, the reaction mixture was diluted with water (1000ml) and extracted with cyclohexane. The cyclohexane solution was washed with water, dried over Na2SO4 and concentrated in vacuo. Column chromatography of the oily residue over silica gel (Merck Kieselgel 60) with petroleum ether-ether (10:1) gave 4 (5.6g, 38%) as a pale yellow liquid.A solution of Methyl (E,E)-8,10-dodecadienoate (4.2g, 0.02mol) in absolute ether (40ml) was added dropwise to a slurry of lithium aluminum hydride (0.38g, 0.01mol) in absolute ether (60 ml) with stirring at room temperature. Stirring was continued for 1 hr at room temperature. After the mixture was refluxed for I hr, the reaction was quen ched with 2NH2SO4 (30ml) and the mixture was worked up by the usual procedure to give the alcohol 5, with a nearly quantitative yield, which solidified during storage in a refrigerator, (recrystallized from pe troleum ether). The purity was 97% on GLC analysis.

Check Digit Verification of cas no

The CAS Registry Mumber 33956-49-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,5 and 6 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 33956-49:
(7*3)+(6*3)+(5*9)+(4*5)+(3*6)+(2*4)+(1*9)=139
139 % 10 = 9
So 33956-49-9 is a valid CAS Registry Number.
InChI:InChI=1/C12H22O/c1-2-3-4-5-6-7-8-9-10-11-12-13/h2-5,13H,6-12H2,1H3/b3-2+,5-4+

33956-49-9 Well-known Company Product Price

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  • Sigma-Aldrich

  • (32716)  Codlemone  PESTANAL®, analytical standard

  • 33956-49-9

  • 32716-50MG

  • 716.04CNY

  • Detail

33956-49-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name codlelure

1.2 Other means of identification

Product number -
Other names (E,E)-8,10-dodecadienol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:33956-49-9 SDS

33956-49-9Synthetic route

trans-2-methyl-5-(7-hydroxyheptyl)-3-sulfolene
87241-02-9

trans-2-methyl-5-(7-hydroxyheptyl)-3-sulfolene

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With potassium carbonate In ethanol at 125℃; for 0.5h;100%
With potassium carbonate In ethanol at 125℃;98%
(E,E)-sorbyl acetate
57006-69-6

(E,E)-sorbyl acetate

trimethylsilyl 6-chloro-1-hexyl ether
34714-00-6

trimethylsilyl 6-chloro-1-hexyl ether

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Stage #1: (E,E)-sorbyl acetate; trimethylsilyl 6-chloro-1-hexyl ether With sodium In toluene at 0 - 80℃; for 12h; Inert atmosphere; Green chemistry;
Stage #2: With sulfuric acid In water; toluene at 0 - 20℃; for 1h; Temperature; Green chemistry;
77.47%
(E)-9-(phenylsulfinyl)-10-dodecen-1-ol
83248-82-2

(E)-9-(phenylsulfinyl)-10-dodecen-1-ol

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With triethylamine In toluene at 80℃; for 18h;60%
(8E,10Z)-dodeca-8,10-dien-1-ol
33956-50-2

(8E,10Z)-dodeca-8,10-dien-1-ol

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With thiophenol at 100℃; for 2h;30%
dodec-8-en-10-yn-1-ol
39616-28-9, 113982-52-8

dodec-8-en-10-yn-1-ol

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With lithium aluminium tetrahydride In tetrahydrofuran; diethylene glycol dimethyl ether at 140℃; for 2h;10%
1,6-hexanediol
629-11-8

1,6-hexanediol

(E,E)-sorbyl acetate
57006-69-6

(E,E)-sorbyl acetate

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multistep reaction;
trans-Crotonaldehyde
123-73-9

trans-Crotonaldehyde

8-hydroxy-octyl-triphenyl-phosphonium bromide
65734-62-5

8-hydroxy-octyl-triphenyl-phosphonium bromide

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With phenyllithium 1.) THF/diethyl ether, 20 min, 2.) -75 deg C, 15 min, -30 deg C, 30 min, 25 deg C; Yield given. Multistep reaction. Yields of byproduct given;
(8E,10E)-8,10-Dodecadienyl-(tetrahydro-2-pyranyl)ether
37935-49-2

(8E,10E)-8,10-Dodecadienyl-(tetrahydro-2-pyranyl)ether

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With toluene-4-sulfonic acid In methanol; water at 60℃; for 2h; Yield given;
With toluene-4-sulfonic acid In methanol at 50℃; for 2h; Yield given;
With methanesulfonic acid; water In methanol at 60℃; for 3h; Hydrolysis;0.74 g
With toluene-4-sulfonic acid In methanol at 70℃; for 0.5h;
(E,E)-sorbyl acetate
57006-69-6

(E,E)-sorbyl acetate

(6-((tetrahydro-2H-pyran-2-yl)oxy)hexyl)magnesium chloride
69049-76-9

(6-((tetrahydro-2H-pyran-2-yl)oxy)hexyl)magnesium chloride

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With hydrogen cation; copper(l) iodide Yield given. Multistep reaction;
1-bromo-3E,5E-heptadiene
37935-45-8

1-bromo-3E,5E-heptadiene

C8H19ClMgOSi

C8H19ClMgOSi

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With dilithium tetrachlorocuprate; water 1) -5 - 0 deg C, 3 h; 2) 20 deg C, 12 h, THF, ether; 2) aq. EtOH, 2 h, boiling; Yield given. Multistep reaction;
7-((1R,2S,3R,5S,6R,7S)-5-Methyl-4,4-dioxo-4λ6-thia-tricyclo[5.2.1.02,6]dec-8-en-3-yl)-heptan-1-ol
86593-91-1

7-((1R,2S,3R,5S,6R,7S)-5-Methyl-4,4-dioxo-4λ6-thia-tricyclo[5.2.1.02,6]dec-8-en-3-yl)-heptan-1-ol

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
at 600℃;

A

(8Z,10E)-8,10-Dodecadien-1-ol
33956-50-2

(8Z,10E)-8,10-Dodecadien-1-ol

B

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With methanol; toluene-4-sulfonic acid In water at 60℃;
With methanol; toluene-4-sulfonic acid In diethyl ether; water for 2h; Heating; Yield given. Yields of byproduct given;
(E)-8-Benzenesulfonyl-dodec-10-en-1-ol
107735-59-1

(E)-8-Benzenesulfonyl-dodec-10-en-1-ol

A

(8E,10Z)-dodeca-8,10-dien-1-ol
33956-50-2

(8E,10Z)-dodeca-8,10-dien-1-ol

B

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With potassium tert-butylate In tetrahydrofuran at 60℃; for 1h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
8-Acetoxy-9-phenylsulphinyl-1-tetrahydropyranyloxydodec-10(E)-ene
96249-88-6

8-Acetoxy-9-phenylsulphinyl-1-tetrahydropyranyloxydodec-10(E)-ene

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With sodium amalgam; pyridinium p-toluenesulfonate 1) MeOH, EtOAc, -35 deg C, 5 h, 2) MeOH, reflux, 3 h; Yield given. Multistep reaction;
(8E,10E)-1,8,10-Dodecatrien
69775-54-8

(8E,10E)-1,8,10-Dodecatrien

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With sodium hydroxide; 9-borabicyclo[3.3.1]nonane dimer; dihydrogen peroxide 1) THF; 2) water.; Yield given. Multistep reaction;
(8E,10E)-8,10-Dodecadiensaeure-methylester
60099-82-3

(8E,10E)-8,10-Dodecadiensaeure-methylester

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With lithium aluminium tetrahydride In diethyl ether 1.) r.t., 1 h, 2.) reflux, 1 h; Yield given;
2-[((8E,10E)-Dodeca-8,10-dienyl)oxy]-tetrahydro-pyran

2-[((8E,10E)-Dodeca-8,10-dienyl)oxy]-tetrahydro-pyran

A

(8E,10Z)-dodeca-8,10-dien-1-ol
33956-50-2

(8E,10Z)-dodeca-8,10-dien-1-ol

B

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

(8E,10E)-8,10-dodecadien-1-oxytrimethylsilane
38568-98-8

(8E,10E)-8,10-dodecadien-1-oxytrimethylsilane

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
With water In ethanol for 2h; Heating;
With toluene-4-sulfonic acid In methanol; water at 60℃; for 3h; Temperature;117 g
ethyl 6-(chloroformyl)hexanoate
14794-32-2

ethyl 6-(chloroformyl)hexanoate

tricarbonyl(1,3-pentadiene)iron

tricarbonyl(1,3-pentadiene)iron

A

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

B

(8E,10E)-dodeca-8,10-dienal
69775-58-2

(8E,10E)-dodeca-8,10-dienal

C

(E,E)-8,10-dodecadienoic acid

(E,E)-8,10-dodecadienoic acid

Conditions
ConditionsYield
Multistep reaction;
methyl 2Z,5E-heptadienoate
40415-88-1

methyl 2Z,5E-heptadienoate

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 98 percent / triethylamine / 12 h / 20 °C
2: 88 percent / LiAlH4 / diethyl ether / 3 h / 20 °C
3: 70 percent / PBr3, pyridine / hexane / 1) 0 deg C, 3h; 2) 20 deg C, 12 h
4: 1) Li2CuCl4; 2) water / 1) -5 - 0 deg C, 3 h; 2) 20 deg C, 12 h, THF, ether; 2) aq. EtOH, 2 h, boiling
View Scheme
(3E, 5E)-hepta-3,5-dien-1-ol
37944-01-7

(3E, 5E)-hepta-3,5-dien-1-ol

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 70 percent / PBr3, pyridine / hexane / 1) 0 deg C, 3h; 2) 20 deg C, 12 h
2: 1) Li2CuCl4; 2) water / 1) -5 - 0 deg C, 3 h; 2) 20 deg C, 12 h, THF, ether; 2) aq. EtOH, 2 h, boiling
View Scheme
methyl (3E,5Z)-3,5-heptadienoate
32793-94-5

methyl (3E,5Z)-3,5-heptadienoate

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 81 percent / LiAlH4 / diethyl ether / 3 h / 20 °C
2: 70 percent / PBr3, pyridine / hexane / 1) 0 deg C, 2 h; 2) 20 deg C, 12 h
3: 1) Li2CuCl4; 2) p-toluenesulfonic acid / 1) THF, 0 deg C, 3 h, then 20 deg C, 12 h; 2) methanol, water, 60 deg C, 3 h
4: 30 percent / C6H5SH / 2 h / 100 °C
View Scheme
methyl (3E,5E)-3,5-heptadienoate
32775-96-5

methyl (3E,5E)-3,5-heptadienoate

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 88 percent / LiAlH4 / diethyl ether / 3 h / 20 °C
2: 70 percent / PBr3, pyridine / hexane / 1) 0 deg C, 3h; 2) 20 deg C, 12 h
3: 1) Li2CuCl4; 2) water / 1) -5 - 0 deg C, 3 h; 2) 20 deg C, 12 h, THF, ether; 2) aq. EtOH, 2 h, boiling
View Scheme
(3E, 5Z)-hepta-3,5-dien-1-ol
85110-94-7

(3E, 5Z)-hepta-3,5-dien-1-ol

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 70 percent / PBr3, pyridine / hexane / 1) 0 deg C, 2 h; 2) 20 deg C, 12 h
2: 1) Li2CuCl4; 2) p-toluenesulfonic acid / 1) THF, 0 deg C, 3 h, then 20 deg C, 12 h; 2) methanol, water, 60 deg C, 3 h
3: 30 percent / C6H5SH / 2 h / 100 °C
View Scheme
1-bromo-3E,5Z-heptadiene
85134-50-5

1-bromo-3E,5Z-heptadiene

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 1) Li2CuCl4; 2) p-toluenesulfonic acid / 1) THF, 0 deg C, 3 h, then 20 deg C, 12 h; 2) methanol, water, 60 deg C, 3 h
2: 30 percent / C6H5SH / 2 h / 100 °C
View Scheme
(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: triethylamine / heptane / 12 h / Heating
2: 81 percent / LiAlH4 / diethyl ether / 3 h / 20 °C
3: 70 percent / PBr3, pyridine / hexane / 1) 0 deg C, 2 h; 2) 20 deg C, 12 h
4: 1) Li2CuCl4; 2) p-toluenesulfonic acid / 1) THF, 0 deg C, 3 h, then 20 deg C, 12 h; 2) methanol, water, 60 deg C, 3 h
5: 30 percent / C6H5SH / 2 h / 100 °C
View Scheme
4-propenyl-1,3-dioxane, E-isomer
114988-54-4

4-propenyl-1,3-dioxane, E-isomer

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 76 percent / H2SO4 / 15 h / 20 - 60 °C
2: 33 percent / H2SO4 / 160 °C / 40 Torr
3: Li2CuCl4 / tetrahydrofuran / 3 h / -10 °C
4: 0.74 g / water; MsOH / methanol / 3 h / 60 °C
View Scheme
(E,E)-sorbyl acetate
57006-69-6

(E,E)-sorbyl acetate

Br-Mg-CH2-CH2-CH(OR)2

Br-Mg-CH2-CH2-CH(OR)2

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: Li2CuCl4 / tetrahydrofuran / 3 h / -10 °C
2: 0.74 g / water; MsOH / methanol / 3 h / 60 °C
View Scheme
(6-((tetrahydro-2H-pyran-2-yl)oxy)hexyl)magnesium chloride
69049-76-9

(6-((tetrahydro-2H-pyran-2-yl)oxy)hexyl)magnesium chloride

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: Li2CuCl4 / tetrahydrofuran / 3 h / -10 °C
2: 0.74 g / water; MsOH / methanol / 3 h / 60 °C
View Scheme
(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

methanesulfonyl chloride
124-63-0

methanesulfonyl chloride

Methanesulfonic acid (8E,10E)-dodeca-8,10-dienyl ester
88076-03-3

Methanesulfonic acid (8E,10E)-dodeca-8,10-dienyl ester

Conditions
ConditionsYield
With triethylamine In dichloromethane99%
(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

(8E,10E)-dodeca-8,10-dienal
69775-58-2

(8E,10E)-dodeca-8,10-dienal

Conditions
ConditionsYield
With pyridinium chlorochromate In dichloromethane65%
With pyridinium chlorochromate In dichloromethane at 20℃; for 2h;64%
With pyridinium chlorochromate In dichloromethane60%
(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

acetic anhydride
108-24-7

acetic anhydride

(E,E)-8,10-dodecadienyl acetate
53880-51-6

(E,E)-8,10-dodecadienyl acetate

(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

8(E),10(E)-Dodecadienyl β-D-Maltopyranoside
86217-86-9

8(E),10(E)-Dodecadienyl β-D-Maltopyranoside

Conditions
ConditionsYield
Yield given. Multistep reaction;
(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

Sodium 8(E),10(E)-Dodecadienyl Sulfate
86217-85-8

Sodium 8(E),10(E)-Dodecadienyl Sulfate

Conditions
ConditionsYield
With sodium hydroxide; sulfur trioxide pyridine complex 1.) pyridine, 10 min.; Yield given. Multistep reaction;
(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

acetic anhydride
108-24-7

acetic anhydride

A

(8Z,10E)-8,10-dodecadienyl acetate
67992-59-0

(8Z,10E)-8,10-dodecadienyl acetate

B

(8E,10Z)-dodeca-8,10-dien-1-yl acetate
67992-60-3

(8E,10Z)-dodeca-8,10-dien-1-yl acetate

C

(E,E)-8,10-dodecadienyl acetate
53880-51-6

(E,E)-8,10-dodecadienyl acetate

Conditions
ConditionsYield
With pyridine Title compound not separated from byproducts;A 1.0 % Chromat.
B 4.0 % Chromat.
C 95.0 % Chromat.
(8E,10E)-dodeca-8,10-dienol
33956-49-9

(8E,10E)-dodeca-8,10-dienol

2-hydroxy-2-methylpropanenitrile
75-86-5

2-hydroxy-2-methylpropanenitrile

(E,E)-trideca-9,11-dienenitrile

(E,E)-trideca-9,11-dienenitrile

Conditions
ConditionsYield
With triphenylphosphine; diethylazodicarboxylate 1.) ether, -20 deg C, 20 min, 2.) ether, -20 deg C, 20 h; Yield given. Multistep reaction;

33956-49-9Relevant articles and documents

Insect pheromones and their analogs I. Synthesis of the sex attractant of the codling moth

Tolstikov,Dzhemilev,Khusnutdinov

, p. 101 - 102 (1978)

The synthesis of the sex attractant of the codling moth Laspeyresia pomonella has been performed using as the initial compounds linear dimers of butadiene with methyl acrylate.

Synthesis of dodeca-8E,10E-dien-1-ol - The sex pheromone of Laspeyresia pomonella via the acetolysis of 4-propenyl-1,3-dioxane

Shakova,Zorin,Musavirov,Safarov,Muslukhov,Kharisov,Ishmuratov,Rakhmankulov

, p. 582 - 584 (1996)

A new scheme has been developed for the synthesis of dodeca-8E,10E-dien-1-ol (the sex pheromone of the codling moth) from sorbyl acetate, available from 4-propenyl-1,3-dioxane through the intermediate diacetate of 3-propenyl-2-oxapentane-1,5-diol.

Stereoselective Cross-Coupling of Grignard Reagents and Conjugated Dienylbromides using Iron Salts with Magnesium Alkoxides

Chourreu, Pablo,Gayon, Eric,Guerret, Olivier,Guillonneau, Lo?c,Lefèvre, Guillaume

supporting information, p. 4701 - 4706 (2021/09/10)

A convenient procedure allowing iron-catalyzed cross-coupling of alkyl or aryl Grignard reagents and conjugated dienyl bromides is reported, relying on the use of cheap and non-toxic magnesium alkoxides as sole additives. An excellent stereoselectivity is observed in the alkyl-dienyl series. This sequence has been applied to the synthesis of the sex pheromone of codling moth, illustrating its applicability for obtaining targets of industrial interest. Preliminary mechanistic studies carried out on the aryl-dienyl cross-coupling suggest that in situ generated ate homoleptic organoiron(II) species act as catalytically relevant intermediates. A modified preparative method for the realization of THF solutions of dienyl bromides as “ready-to-use” coupling partners is also discussed, circumventing the thermal instability of those derivatives.

SYNTHESIS OF PHEROMONES AND RELATED MATERIALS VIA OLEFIN METATHESIS

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, (2018/09/12)

Methods for preparation of olefins, including 8- and 11-unsaturated monoenes and polyenes, via transition metathesis-based synthetic routes are described. Metathesis reactions in the methods are catalyzed by transition metal catalysts including tungsten-, molybdenum-, and ruthenium-based catalysts. The olefins include insect pheromones useful in a number of agricultural applications.

SYNTHESIS OF OLEFINIC ALCOHOLS VIA ENZYMATIC TERMINAL HYDROXYLATION

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Paragraph 0315; 0320, (2016/01/30)

In certain aspects, the present invention provides methods for producing terminally hydroxylated alkenes and alkynes by contacting an unsaturated or saturated hydrocarbon substrate with a hydroxylase enzyme. Exemplary terminal hydroxylases useful for carrying out the methods of the invention exhibit strong selectivity towards one terminal carbon of a hydrocarbon substrate and include, but are not limited to, non-heme diiron alkane monooxygenases, cytochromes P450 (e.g., cytochromes P450 of the CYP52 and CYP153 family), as well as long chain alkane hydroxylases. In some embodiments, the terminally hydroxylated alkene or alkyne is further converted to a terminal alkenal. In certain embodiments, terminally hydroxylated alkenes and alkynes are useful as insect pheromones which modify insect behavior. In other embodiments, terminally hydroxylated alkenes and alkynes are useful intermediates for producing pheromones via acetylation or oxidation of the alcohol moiety.

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