First Examples of Transition-Metal Free Sonogashira-Type Couplings

Organic Letters

Volumn 5, Issue 21, 2003, Pages 3919-3922

  Leadbeater, Nicholas E ^a   Marco, Maria ^a   Tominack, Bonnie J ^a  

^a KING'S COLLEGE LONDON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

BASE; BROMINE DERIVATIVE; IODINE DERIVATIVE; MACROGOL; SODIUM HYDROXIDE; SOLVENT; TRANSITION ELEMENT;

ARTICLE; CATALYST; CHEMICAL REACTION; METHODOLOGY; PHASE TRANSITION; SONOGASHIRA REACTION;

EID: 0242459935     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol035485l     Document Type: Article

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25. It should be noted that the power input does not remain the same throughout the reaction period. The power stated is used to take the reaction mixture to the desired temperature, and then bursts of lower power are used to maintain this temperature. This is done automatically by the apparatus. Therefore, in effect, the temperature is maintained only for the reaction time.
26. No Pd or Cu found down to below 1 ppm of each.