Mild Reaction Conditions for the Terminal Deuteration of Alkynes
摘要:
Routinely employed syntheses of terminally deuterated alkynes often utilize strong bases (i.e., LDA, n-BuLi, or Grignard reagents) or low (i.e., -78 degrees C) or elevated (i.e., 56 degrees C) reaction temperatures; furthermore many of these procedures afford average yields and in some cases less than optimum deuterium incorporation. Herein we report the application of alternative extremely mild reaction conditions that readily afford quantitative yields of terminally deuterated alkynes in a matter of minutes with exceptional isotope incorporation at ambient temperature.
Synthesis of <i>C</i>-Propargylic Esters of N-Protected Amino Acids and Peptides
作者:Sean P. Bew、Glyn D. Hiatt-Gipson
DOI:10.1021/jo100537q
日期:2010.6.4
critical importance of aminoacids in organic synthesis as well as their myriad of applications in “click” chemistry it is interesting to note that the synthesis of C-propargyl derived aminoacidesters has not been particularly well served. We report a convenient, straightforward, and high-yielding synthesis of structurally diverse C-propargyl-derived N-protected aminoacidesters.
Mild Reaction Conditions for the Terminal Deuteration of Alkynes
作者:Sean P. Bew、Glyn D. Hiatt-Gipson、Jenny. A. Lovell、Christophe Poullain
DOI:10.1021/ol2029178
日期:2012.1.20
Routinely employed syntheses of terminally deuterated alkynes often utilize strong bases (i.e., LDA, n-BuLi, or Grignard reagents) or low (i.e., -78 degrees C) or elevated (i.e., 56 degrees C) reaction temperatures; furthermore many of these procedures afford average yields and in some cases less than optimum deuterium incorporation. Herein we report the application of alternative extremely mild reaction conditions that readily afford quantitative yields of terminally deuterated alkynes in a matter of minutes with exceptional isotope incorporation at ambient temperature.