1604-26-8

Basic information

• Product Name: Hydrodehydrolinalool
• Synonyms: Hydrodehydrolinalool
• CAS NO: 1604-26-8
• Molecular Formula: C₁₀H₁₈O
• Molecular Weight: 154.24932
• Mol File: 1604-26-8.mol

Chemical Properties

• Boiling Point: 184.312°C at 760 mmHg
• Flash Point: 65.887°C
• Appearance: /
• Density: 0.88g/cm³
• Vapor Pressure: 0.211mmHg at 25°C
• Refractive Index: 1.456
• CAS DataBase Reference: Hydrodehydrolinalool(CAS DataBase Reference)
• NIST Chemistry Reference: Hydrodehydrolinalool(1604-26-8)
• EPA Substance Registry System: Hydrodehydrolinalool(1604-26-8)

Safety Data

• Hazardous Substances Data: 1604-26-8(Hazardous Substances Data)

Usage

InChI:InChI=1/C10H18O/c1-5-10(4,11)8-6-7-9(2)3/h1,9,11H,6-8H2,2-4H3

Upstream product

• 60-29-7 diethyl ether 
• 928-68-7 6-methylheptan-2-one 
• 74-86-2 acetylene 
• 110-93-0 6-Methyl-hept-5-en-2-on 
• 1860-43-1 2,5-dimethylhexanal 
• 1066-26-8 sodium acetylide 

Downstream Products

• 18479-49-7 3,7-dimethyl-oct-1-en-3-ol 
• 78-70-6 3,7-dimethylocta-1,6-dien-3-ol 
• 57784-35-7 3,7-dimethyl-2-octenal 
• 40607-48-5 3,7-dimethyl-2-octen-1-ol 
• 106-21-8 tetrahydrogeraniol 
• 78-69-3 tetrahydrolinalool 
• 689-66-7 6,10-dimethyl-undec-5-en-2-one 

Relevant articles and documents

Method for preparing linalool

The invention provides a method for preparing linalool. The method specifically comprises the following steps: taking 6-methyl-5-heptene-2 one as a raw material, carrying out ethynylation reaction toprepare dehydrolinalool, removing water in a reaction system, carrying out conventional distillation or rectification for separating dehydrolinalool, and carrying out selective hydrogenation to synthesize linalool. Impurities with the molecular weight of 170 (M = 170) can be generated in the treatment process of the 6-methyl-5-heptene-2 one ethynylation reaction liquid, and the content of the impurities should be strictly controlled to be 0.01% or below in order to regulate and control the final product linalool aroma. In order to control the content of the impurity, the generation of the impurity can be optimized and inhibited in the aspect of a post-treatment mode of a 6-methyl-5-heptene-2 one acetylation reaction solution, or the impurity is removed by adopting an efficient rectification mode.

PROCESS FOR THE MANUFACTURE OF 3,7-DIMETHYL-1-OCTEN-3-OL

The present invention is directed to a process for the manufacture of 3,7-dimethyl-1-octen-3-ol comprising the following steps: a) hydrogenation of 6-methyl-5-hepten-2-on to 6-methyl-2-heptanon in the presence of hydrogen and a palladium containing catalyst on a carrier selected from the group consisting of carbon, calcium carbonate and aluminum oxide.b) reaction of 6-methyl-2-heptanon with acetylene to 3,7-dimethyl-1-octin-3-ol in the presence of ammonia and potassium hydroxide and in the absence of any additional organic solvent;c) hydrogenation of 3,7-dimethyl-1-octin-3-ol to 3,7-dimethyl-1-octen-3-ol in the presence of hydrogen and a palladium containing catalyst on a carrier selected from the group consisting of calcium carbonate, aluminum oxide, silica, porous glass, carbon or graphite, and barium sulphate, with the proviso that the catalyst additionally contains lead when the carrier is calcium carbonate. The present invention is further directed to a process for the manufacture of isophytol and vitamin E, where a thus produced 3,7-dimethyl-1-octen-3-ol is used as starting material.

Preparation of higher alpha, beta-unsaturated alcohols

Higher α,β-unsaturated alcohols are prepared by monoethynylation of a ketone by the NH3/KOH method, if desired hydrogenation of the acetylene alcohol in the presence of hydrogen over a Pd-containing thin layer catalyst, purifying distillation of the hydrogenation product, preferably in a dividing wall column with recirculation of the unreacted ketone to the ethynylation step, and, if desired, preparation of higher alcohols having in each case 5 more carbon atoms in the chain by reacting the alcohols prepared by monoethynylation and, if desired, partial hydrogenation with alkyl acetoacetatesor diketene in a Carroll reaction to form ketones and using these as starting materials for the steps ethynylation, optional hydrogenation and fractional distillation.