3-Hydroxybutanal

3-Hydroxybutanal (acetaldol, aldol) bụ ihe dị n'ime ala nke nwere usoro CH3CH (OH) CH2CHO. A na-ahazi ya dị ka aldol na okwu "aldol" nwere ike izo aka kpọmkwem na 3-hydroxybutanal. Ọ bụ n'ụzọ iwu kwadoro ngwaahịa ọrụ nkụzi afọ okuku n'oge ochie nakwa n'oge nke dimerization nke acetaldehyde. Mmiri na-enweghị ụcha ma ọ bụ na-acha odo odo, ọ bụ ihe dịgasị iche iche na nke ụwa họrọ site na iji bịa na ímé ihe ọ bụla n'ime bara uru nke nwere mmetụta dịgasị anya. Ngwakọta ahụ bụ chiral ọ bụ ezie na a naghị ejikarị akụkụ a eme ihe.

Mmepụta

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Acetaldehyde dimerizes mgbe a gwọrọ ya na mmiri sodium hydroxide:

2 CH3CHO → CH3CH (OH) CH2CHO + H2O

Mmeghachi omume na ojiji

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Mmiri na-adịghị n'ahụ nke 3-hydroxybutanal na-enye crotonaldehyde. Distillation nke 3-hydroxybutanal na-amanye nke ọma iji mee mgbanwe a:

CH3CH (OH) CH2CHO → CH3CH=CHCHO + H2O

Hydrogenation nke 3-hydroxybutanal na-enye 1,3-butanediol:

CH3CH (OH) CH2CHO + H2 → CH3CH

Diol a bụ onye na-ebute 1,3-butadiene, onye na-esote polymer dị iche iche.

Polymerization nke 3-hydroxybutanal bụkwa nke na-eme n'onwe ya, mana enwere ike ịkwụsị ya na mgbakwunye mmiri.

A na-eji Aldol eme ihe n'ime ihe na-esi ísì ụtọ na n'ime mmiri.[1]

Ojiji mbụ ma ọ bụ niche

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A na-eji ya eme ihe n'oge gara aga na ọgwụ dị ka ọgwụ na sedative.[2]

Hụkwa

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  • 4-Hydroxybutanal

Ntụaka

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  1. ↑ American Heritage Dictionary, 1973.
  2. ↑ Hans Brandenberger, Robert A. A. Maes. (1997). Analytical Toxicology: For Clinical, Forensic, and Pharmaceutical Chemists. New York: de Gruyter.