Facile one-pot syntheses of bromoacetylenes from bulky trialkylsilyl acetylenes
作者:Taeho Lee、Hee Ryong Kang、Shinae Kim、Sanghee Kim
DOI:10.1016/j.tet.2006.02.016
日期:2006.4
1-trialkylsilylacetylenes to haloacetylenes in situ remains desirable, especially when the corresponding terminal acetylenes are unstable. Using AgF and NBS, we have successfully transformed various 1-(trialkylsilyl)acetylenes, including bulky trialkylsilylacetylenes, into bromoacetylenes in high yield. The reactions are chemoselective: triisopropylsilyl ethers were not deprotected under these conditions.
meiogynin A, an inhibitor of proteins of the Bcl‐2 family, have been elaborated by an intermolecular Diels–Alder (DA) reaction of various conjugated chloro‐trienes with two α,β‐unsaturated carboxylic acids as dienophiles. The perfect regioselectivity and good to excellent diastereoselectivities of these reactions were rationalized by DFT calculations.
申请人:The Trustees of Columbia University in the City of New York
公开号:US20200199657A1
公开(公告)日:2020-06-25
A method for optical super-multiplexing using polyynes to provide enhanced images from stimulated Raman microscopy is disclosed. In some exemplary embodiments, the polyynes are organelle-targeted or spectral barcoded. Imaging can be enhanced by using the polyynes to image whole live cells or specific organelles within live cells. The polyynes can also be used in optical data storage (i.e., encoding) and identification (i.e., decoding) applications.
[EN] OPTICAL SUPER-MULTIPLEXING BY POLYYNES<br/>[FR] SUPER-MULTIPLEXAGE OPTIQUE PAR POLYYNES
申请人:UNIV COLUMBIA
公开号:WO2019028430A1
公开(公告)日:2019-02-07
A method for optical super-multiplexing using polyynes to provide enhanced images from stimulated Raman microscopy is disclosed. In some exemplary embodiments, the polyynes are organelle-targeted or spectral barcoded. Imaging can be enhanced by using the polyynes to image whole live cells or specific organelles within live cells. The polyynes can also be used in optical data storage (i.e., encoding) and identification (i.e., decoding) applications.