I found the field of Chemistry very interesting. Saw the article Selective Acetylation of Non-anomeric Groups of per-O-Trimethylsilylated Sugars published in 2021. Application In Synthesis of Benzoic anhydride, Reprint Addresses Wang, CC (corresponding author), Acad Sinica, Inst Chem & Sustainable Chem Sci & Technol SCST, Taiwan Int Grad Program TIGP, Taipei 115, Taiwan.. The CAS is 93-97-0. Through research, I have a further understanding and discovery of Benzoic anhydride
Selective modification of the hydroxyl groups of sugars has been a long-standing challenge due to their proximate relative reactivity. Herein, we report a TMSOTf-catalyzed selective acetylation of the non-anomeric hydroxyl groups of several per-O-TMS-protected sugar substrates while leaving their anomeric group unaffected. In addition to standing versatile by itself, the anomeric O-TMS group left intact can be functionalized to afford key sugar precursors such as imidate donors, which could otherwise be synthesized via a stepwise anomeric deprotection-functionalization procedure.
About Benzoic anhydride, If you have any questions, you can contact Weldu, WD; Wang, CC or concate me.. Application In Synthesis of Benzoic anhydride
Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com