- Synthesis of acetylenic alcohols with calcium carbide as the acetylene source
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Propargyl alcohols containing a terminal alkyne group are highly important and versatile intermediates. Here, we report the synthesis of these compounds from an inexpensive and renewable resource, calcium carbide (CaC2). No metal catalysts are required in this new protocol and the reactions take place under very mild conditions.
- Sum, Yin Ngai,Yu, Dingyi,Zhang, Yugen
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supporting information
p. 2718 - 2721
(2013/10/08)
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- METHOD FOR PRODUCING A PROPARGYL ALCOHOL AND AN ALLYL ALCOHOL
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The invention relates to a method for producing a propargyl alcohol of formula (I) wherein R1 represents a C1-30 alkyl radical, a C3-8 cycloalkyl radical, a C2-20 alkoxyalkyl radical, a C6-14 aryl radical, a C7-20 alkoxyaryl radical, a C7-20 aralkyl radical, a C7-20 alkylaryl radical or H. According to said method, a corresponding aldehyde of formula R1-CHO is reacted with acetylene in the presence of ammonia and a catalytic quantity of between 0.6 and 10 mol % of an alkaline metal hydroxide, an alkaline earth metal hydroxide or an alkaline metal alcoholate, in relation to the aldehyde used. The invention also relates to a method for producing an allyl alcohol of formulae (II) and (III), from the propargyl alcohol (I) produced according to the invention.
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Page/Page column 8
(2008/06/13)
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