甲烷磺酰碘化物是在水溶液中由三碘化物与甲烷亚磺酸盐反应制得的。(CH 3 SO 2 I)4 ·KI 3 ·2I 2的二向色晶体由具有高浓度CH 3 SO 2 –的KI / I 2溶液形成,而(CH 3 SO 2 I)2 ·RbI 3的二向色晶体由RbI / I 2溶液形成。这两种化合物的X射线晶体学分析表明CH 3 SO 2I分子通过其氧原子与金属阳离子配位,SI键长度为2.44Å。在低浓度的CH 3 SO 2 - ,溶液保持均匀和磺酰形成碘化物在快速平衡:CH 3 SO 2 - + I 3 - ⇌CH 3 SO 2 I + 2I - ,ķ MSI = 1.07±0.01 M在25°C(μ= 0.1 M,NaClO 4)。磺酰碘溶液在309 nm处显示最大吸收,摩尔吸收率为667 M –1 cm –1。停止流研究表明,平衡是在仪器的死时间(约2 ms)内建立的。CH 3 SO 2 I的溶液缓慢分解形成磺酸盐:CH
甲烷磺酰碘化物是在水溶液中由三碘化物与甲烷亚磺酸盐反应制得的。(CH 3 SO 2 I)4 ·KI 3 ·2I 2的二向色晶体由具有高浓度CH 3 SO 2 –的KI / I 2溶液形成,而(CH 3 SO 2 I)2 ·RbI 3的二向色晶体由RbI / I 2溶液形成。这两种化合物的X射线晶体学分析表明CH 3 SO 2I分子通过其氧原子与金属阳离子配位,SI键长度为2.44Å。在低浓度的CH 3 SO 2 - ,溶液保持均匀和磺酰形成碘化物在快速平衡:CH 3 SO 2 - + I 3 - ⇌CH 3 SO 2 I + 2I - ,ķ MSI = 1.07±0.01 M在25°C(μ= 0.1 M,NaClO 4)。磺酰碘溶液在309 nm处显示最大吸收,摩尔吸收率为667 M –1 cm –1。停止流研究表明,平衡是在仪器的死时间(约2 ms)内建立的。CH 3 SO 2 I的溶液缓慢分解形成磺酸盐:CH
[EN] 5-MORPHOLIN-4-YL-PYRAZOLO[4,3-B]PYRIDINE DERIVATIVES<br/>[FR] DÉRIVÉS DE 5-MORPHOLIN-4-YL-PYRAZOLO[4,3-B]PYRIDINE
申请人:MERCK PATENT GMBH
公开号:WO2020049017A1
公开(公告)日:2020-03-12
Compounds of the formula Ia and Ib in which R1, R2 and R3 have the meanings indicated in Claim 1, are inhibitors of ATR, and can be employed for the treatment of diseases such as cancer.
A new method for C–C coupling of terminal alkenes via a sulphonylation–alkylation–desulphinylation sequence: synthesis of E- and Z-α-bisabolenes
作者:Jack E. Baldwin、Robert M. Adlington、Yoshiyasu Ichikawa、Christopher J. Kneale
DOI:10.1039/c39880000702
日期:——
A newmethod for regiospecific C–Ccoupling of terminalalkenes based on a sulphonylation–alkylation–desulphinylation process, mediated through allylic sulphinic acids, and its application to the conversion of limonene into E- and Z-α-bisabolenes, are described.
Rapid and Scalable Halosulfonylation of Strain‐Release Reagents**
作者:Helena D. Pickford、Vasyl Ripenko、Ryan E. McNamee、Serhii Holovchuk、Amber L. Thompson、Russell C. Smith、Pavel K. Mykhailiuk、Edward A. Anderson
DOI:10.1002/anie.202213508
日期:2023.1.16
hydrocarbons is described that proceeds under practical, scalable and mild conditions. Sulfonyl halides featuring aryl, heteroaryl and alkyl substituents are generated in situ from sulfinate salts and convenient halogen atom sources. This chemistry enables the synthesis of an array of halogen/sulfonyl-substituted bioisosteres and cyclobutanes, on up to multidecagram scale. Hal=Halogen.