Abstract
Abstract Benzyloxymethyl-12-crown-4, a precursor of hydroxymethyl-12-crown-4, is prepared in an excellent yield by the reaction of 3-benzyloxy-1,2-propanediol with 1,8-dichloro-3,6-dioxaoctane in the heterogeneous t-BuOLi/t-BuOH/LiBr·2H2O reaction system. The hydrogenolysis in the presence of p-toluenesulfonic acid leads to a good yield of hydroxymethyl-12-crown-4. The sandwich-type 2:1 complexation with Na+ of 12-crown-4 and hydroxymethyl-12-crown-4 derivatives was discussed on the basis of the stability constants and the solvent extraction in the CH2Cl2–water system.
References
18
Referenced
44
{'key': '2024011802162758500_r1'}
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Dates
Type | When |
---|---|
Created | 19 years, 1 month ago (July 25, 2006, 9:06 p.m.) |
Deposited | 1 year, 7 months ago (Jan. 17, 2024, 9:16 p.m.) |
Indexed | 1 year, 7 months ago (Jan. 19, 2024, 11:39 a.m.) |
Issued | 43 years, 2 months ago (July 1, 1982) |
Published | 43 years, 2 months ago (July 1, 1982) |
Published Online | 19 years, 2 months ago (June 27, 2006) |
Published Print | 43 years, 2 months ago (July 1, 1982) |
@article{Miyazaki_1982, title={Synthesis and Alkali-cation Complexing Properties of 12-Crown-4 Derivatives}, volume={55}, ISSN={1348-0634}, url={http://dx.doi.org/10.1246/bcsj.55.2005}, DOI={10.1246/bcsj.55.2005}, number={7}, journal={Bulletin of the Chemical Society of Japan}, publisher={Oxford University Press (OUP)}, author={Miyazaki, Takeshi and Yanagida, Shozo and Itoh, Akira and Okahara, Mitsuo}, year={1982}, month=jul, pages={2005–2009} }