Previously (p. 1120) we mentioned that the formylation of benzene (i.e., the replacement of H by Hc=0) cannot be carried out through a standard Friedel-Crafts acylation because methanoyl chloride (formyl chloride) cannot be added directly. The Gattermann-Koch synthesis circumvents this problem by making methanoyl chloride in situ (shown at the right), using a gaseous mixture of carbon monoxide and hydrochloric acid at high pressures. With this in mind, draw the detailed mechanism for the Formyl chloride is unstable, so it is produced only temporarily. Colg) HCIG) + H CI Formyl chloride + HCIG) electrophilic aromatic substitution that takes place in the following reaction. + COg) AICI3
Previously (p. 1120) we mentioned that the formylation of benzene (i.e., the replacement of H by Hc=0) cannot be carried out through a standard Friedel-Crafts acylation because methanoyl chloride (formyl chloride) cannot be added directly. The Gattermann-Koch synthesis circumvents this problem by making methanoyl chloride in situ (shown at the right), using a gaseous mixture of carbon monoxide and hydrochloric acid at high pressures. With this in mind, draw the detailed mechanism for the Formyl chloride is unstable, so it is produced only temporarily. Colg) HCIG) + H CI Formyl chloride + HCIG) electrophilic aromatic substitution that takes place in the following reaction. + COg) AICI3
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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