calcium turnings and amines in THF at room temperature yields the corresponding calcium bis(amides), calcium bromide and ethane. This in situ Grignard metalation method (iGMM) allows the preparation of calcium bis(amides) from secondary and primary trialkylsilyl-substituted amines and anilines on a multigram scale. 1 Background 2 The In Situ Grignard Metalation Method (iGMM) 3 Properties of [(thf)2M(HMDS)2]
Azadithiolates cofactor of the iron-only hydrogenase and its PR3-monosubstituted derivatives: Synthesis, structure, electrochemistry and protonation
作者:Zhen Wang、Jian-Hui Liu、Cheng-Jiang He、Shi Jiang、Björn Åkermark、Li-Cheng Sun
DOI:10.1016/j.jorganchem.2007.08.026
日期:2007.11
condensation of ironcarbonyl sulfides, formaldehyde and silyl protected amine. Its monosubstituted complexes (μ-SCH2)2NH[Fe2(CO)5PR3] (R = Ph (6), Me (7)) were accordingly prepared. The coordination configurations of 5 and 6 were characterized by X-ray crystallography. Protonation of complex 7 to form the N-protonated product occurs in an acetonitrile solution upon addition of triflic acid. The redox properties
chloride 2 yields bis[tris(trimethylsilyl)methylzinc]triisopropylsilylphosphandiide 3a and -arsandiide 3b, respectively. The pnictogen atoms are in a trigonal pyramidal surrounding, and the CZnP as well as the CZnAs moieties are bent. Due to the steric crowding, a bis(alkylzinc) substituted amine was not detected, but the metathesis reaction of lithium triisopropylsilylamide with 2 gives tris
Sulfondiimidamides as new functional groups for synthetic and medicinal chemistry
作者:Ze-Xin Zhang、Michael C. Willis
DOI:10.1016/j.chempr.2022.02.013
日期:2022.4
three-dimensional structure, chemical and metabolic stability, polarity, and hydrogen-bonding ability, sulfonamides occupy a privileged position among the functionalgroups used to design bioactive molecules. The mono aza variants, sulfonimidamides, a functionalgroup known since the 1930s, possess an extra nitrogen atom, which delivers an additional point of diversity and introduces chirality at sulfur. However