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Stereochemistry of the reaction of D(positive)-2,3-epoxybutane with alcohols. The coordination reaction between silver ion and alkynes. Some relationships of sterols to plant growth

Citation

Helmkamp, George Kenneth (1953) Stereochemistry of the reaction of D(positive)-2,3-epoxybutane with alcohols. The coordination reaction between silver ion and alkynes. Some relationships of sterols to plant growth. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-05082003-105201

Abstract

PART I. The reaction between D(+)-2,3-epoxybutane and alcohols is accompanied by a Walden inversion. The 3-methoxy-2-butanol prepared in this manner is an erythro-isomer, for meso-2,3-dimethoxybutane can be prepared from it by the Williamson synthesis. PART II. Permanganate oxidation under alkaline conditions has been employed as a method for the quantitative determination of aqueous solutions of 3-hexyne. 3-Hexyne and several homologs (methyl groups in the 1-, 2- and 5-positions) have been synthesized. Argentation constants for these have been evaluated by means of their solubilities in aqueous solutions of silver ion at constant ionic strength. PART III. A survey has been made concerning the effect of various steroidal substances on growth of pea embryos. A strong inhibition was noted in the presence of testosterone. Estrone and saponins tended to enhance early growth.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Chemistry and Chemical Engineering
Major Option:Chemistry
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1953
Record Number:CaltechETD:etd-05082003-105201
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-05082003-105201
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1671
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:08 May 2003
Last Modified:26 Dec 2012 02:40

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