Efficient Synthesis of Sulfonyl Azides from Sulfonamides
作者:Jessica Raushel、Suresh M. Pitram、Valery V. Fokin
DOI:10.1021/ol8011088
日期:2008.8.21
Triflyl azide serves as an efficient diazo transfer reagent in this first direct synthesis of sulfonylazidesfrom readily available and stable sulfonamides. The process is experimentally simple, mild, and high-yielding. Sulfonylazides participate in various catalytic transformations providing rapid access to diversely functionalized sulfonamide derivatives in good yields.
Synthesis of<i>N</i>,<i>N′</i>-Disulfonylamidines from Sulfonamides and Alkynes by a Two-Step, One-Pot Reaction with Nonafluorobutanesulfonyl Azide
作者:José Ramón Suárez、Joanna Kwiczak、Katarzyna Grenda、M. Luisa Jimeno、Jose Luis Chiara
DOI:10.1002/adsc.201201001
日期:2013.3.25
Nonafluorobutanesulfonylazide is an advantageous alternative to triflyl azide for the efficient synthesis of sulfonyl azidesfromsulfonamides in terms of its higher reactivity, lower cost, and non‐hazardous nature. The reagent has proven its utility in a novel synthesis of N,N′‐disulfonylamidines from available sulfonamides by a copper‐catalyzed two‐step, one‐pot sequential process with added terminal
According to one embodiment, there is provided a method of forming a pattern, including forming a thermally crosslinkable molecule layer including a thermally crosslinkable molecule on a substrate, forming a photosensitive composition layer including a photosensitive composition on the thermally crosslinkable molecule layer, chemically binding the thermally crosslinkable molecule to the photosensitive composition by heating, selectively irradiating the photosensitive composition layer with energy rays, forming a block copolymer layer including a block copolymer on the photosensitive composition layer, and forming a microphase-separated structure in the block copolymer layer.