Post 271991 (https://www.thevespiary.org/talk/index.php?topic=9102.msg27199100#msg27199100)
(hypo: "first encouraging ketenelamp experiment", Methods Discourse)Post 247039 (missing)
(dickdastardly: "Acetic Anhydride", Chemicals & Equipment)Post 462958 (https://www.thevespiary.org/talk/index.php?topic=11772.msg46295800#msg46295800)
(Rhodium: "Na-Acetate + Na-Pyrosulfate -> Acetic Anhydride", Novel Discourse)https://www.thevespiary.org/rhodium/Rhodium/chemistry/anhydrides.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/anhydrides.html)
, there is a writeup on a variation using sulfur, chlorine gas and NaOAc.Post 468059 (https://www.thevespiary.org/talk/index.php?topic=7515.msg46805900#msg46805900)
(hellman: "S2cl2 made in situ(anyone tried this?)", Chemistry Discourse)