Sandrock, Paul B. published the artcileIsopropyl 2,4,6-triisopropylphenyl sulfone: an aryl sulfone with unusual atom deviations from the aromatic least-squares plane, Recommanded Product: 2,4,6-Triisopropylbenzenethiol, the publication is Acta Crystallographica, Section E: Structure Reports Online (2004), 60(4), o544-o546, database is CAplus.
Iso-Pr 2,4,6-triisopropylphenyl sulfone, C18H30O2S, (I), was synthesized for the 1st time. Crystallog. data are given. In spite of the bulky iso-Pr substituents on both ortho positions, crystalline (I) does not exhibit rotational disorder of the iso-Pr group bonded to the sulfonyl. In contrast, the corresponding bromo- and chloroisopropyl groups of crystalline aryl sulfones possessing much smaller di-ortho-Me substituents display striking rotational disorder. While the aryl rings of the latter compounds are essentially planar, considerable atom deviation from the aromatic least-squares plane of (I) was observed None of the intra- or intermol. distances between the Me C atoms of the sulfonylisopropyl group and those of the two ortho-iso-Pr groups of (I) is shorter than the sum of their van der Waals radii, making it unlikely that they would interfere with the rotation of the ¦Á-iso-Pr group prior to crystallization
Acta Crystallographica, Section E: Structure Reports Online published new progress about 22693-41-0. 22693-41-0 belongs to catalysis-chemistry, auxiliary class Other Functionalization Reagent, name is 2,4,6-Triisopropylbenzenethiol, and the molecular formula is C15H24S, Recommanded Product: 2,4,6-Triisopropylbenzenethiol.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia