Longlasting noncompetitive antagonists

Phenoxybenzamine: Phenoxybenzamine, N-(2-chloroethyl)-N-(1-methyl-2-phenoxyethyl) benzylamine (12.2.5), is synthesized by reacting phenol with propylenoxide, which forms 1-phenoxy-2-propanol (12.2.1), the chlorination of which with thionyl chloride gives 1-phenoxy-2-propylchloride (12.2.2). Reacting this with 2-aminoethanol leads to formation of 1-phenoxy-2-(2-hydroxyethyl)aminopropane (12.2.3). Alkylation of the secondary amino group gives N-(2-hydroxyethyl)-N-(1-methyl-2-phenoxyethyl)benzylamine (12.2.4), the hydroxyl group of which is chlorinated using thionyl chloride, giving phenoxybenzamine

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