“…In 2012, Panisch et al [29] reported the functionalization of all-cis-cyclotetrasiloxanes via the Heck and Sonogashira coupling reactions. The Piers-Rubinsztajn reaction, an efficient route for constructing the C-O-Si or Si-O-Si bonds [40,45,[62][63][64][65][66][67], can also be used for the modification of hydrosilanes and hydrosilyl-functionalized linear, hyperbranched, cage T8, and double-decker silsesquioxanes [40,45,[62][63][64]66,[68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84]. In the case of all-ciscyclotetrasiloxanes, we recently synthesized and characterized Janus-type phenyl-substituted all-cis-cyclotetrasiloxanes, as shown in Scheme 1 [35].…”