ChemicalBook CAS DataBase List DIMETHYL PENTADECANEDIOATE

DIMETHYL PENTADECANEDIOATE synthesis

7synthesis methods

Product Name:DIMETHYL PENTADECANEDIOATE
CAS Number:36575-82-3
Molecular formula:C17H32O4
Molecular Weight:300.43

Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-

1000210-73-0
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36575-82-3
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Yield: 80%

Reaction Conditions:

with potassium hydroxide;hydrazine hydrate in ethylene glycol

Steps:

R.3 REFERENCE EXAMPLE 3: (conversion of IV to VI)
REFERENCE EXAMPLE 3: (conversion of IV to VI) Five grams of 4-oxopentadecanedioic acid obtained in Examples and 2.2 g of potassium hydroxide were dissolved in 40 ml of ethylene glycol, 12 ml of hydrazine hydrate was added and the mixture was refluxed for 8 hours. Then, 7.2 g of potassium hydroxide was added to the mixture and the mixture was heated for 6 hours. The reaction solution was poured into water and acidified with concentrated hydrochloric acid to give a precipitate, which was esterified with methanol an distilled off at 130° to 131° C/0.1 mmHg, thus obtaining 4.2 g of the compound: dimethyl pentadecanedioate in 80% yield. The latter compound could be transformed to cyclopentadecanone in 75% yield by the general method of acyloin condensation and reduction.

References:

Daicel Ltd. US4085274, 1978, A

67-56-1 Synthesis