5 research outputs found
Bu<sub>4</sub>NI-Catalyzed Dehydrogenative Coupling of Diaryl Phosphinic Acids with C(sp<sup>3</sup>)–H Bonds of Arenes
An efficient phosphorylation
of CÂ(sp<sup>3</sup>)–H bonds
of arenes with diaryl phosphinic acids via Bu<sub>4</sub>NI-catalyzed
dehydrogenative coupling has been developed. This transformation proceeds
efficiently under transition-metal-free reaction conditions and represents
a straightforward method to prepare valuable organophosphorus compounds
from readily available arenes and diaryl phosphinic acids
DCC-assisted direct esterification of phosphinic and phosphoric acids with <i>O</i>-nucleophiles
<p></p> <p>A novel and efficient dicyclohexylcarbodiimide-promoted protocol for the selective and controllable esterification of P(O)OH compounds using <i>O</i>-nucleophiles (alcohols and phenols) as efficient esterification reagents is described. This method features a high efficiency and good functional-group tolerance, meaning a simple way to synthesize a broad spectrum of phosphinic and phosphoric acid esters from basic starting materials with moderate to excellent yields.</p
Direct Aerobic Oxidative Esterification and Arylation of P(O)–OH Compounds with Alcohols and Diaryliodonium Triflates
Copper-catalyzed
aerobic oxidative esterification of PÂ(O)–OH
compounds is achieved using alcohols as efficient esterification reagents,
giving the expected products with good to moderate yields. Furthermore,
it is shown that the arylation of PÂ(O)–OH compounds proceeds
efficiently to produce the corresponding products via the treatment
of diaryliodonium triflates under mild reaction conditions. It is
a simple way to produce a broad spectrum of functionalized phosphinates,
phosphonates, and phosphates from basic starting materials with good
to excellent yields. The protocol is convenient for practical application.
A plausible mechanism has been proposed for the reaction
Zn-Catalyzed Dehydroxylative Phosphorylation of Allylic Alcohols with P(III)-Nucleophiles
A novel
and efficient protocol for the synthesis of diarylallyl-functionalized
phosphonates, phosphinates, and phosphine oxides through the zinc-catalyzed
dehydroxylative phosphorylation of allylic alcohols with P(III)-nucleophiles
via a Michaelis–Arbuzov-type rearrangement is reported. A broad
range of allylic alcohols and P(III)-nucleophiles (P(OR)3, ArP(OR)2, and Ar2P(OR)) are well tolerated
in this reaction, and the expected dehydroxylative phosphorylation
products could be synthesized with good to excellent yields under
the optimal reaction conditions. The reaction can be easily scaled
up at a gram-synthesis level. Furthermore, through the step-by-step
control experiments, kinetic study experiments, and 31P
NMR tracking experiments, we acquired insights into the reaction and
proposed the possible mechanism for this transformation
Zn-Catalyzed Dehydroxylative Phosphorylation of Allylic Alcohols with P(III)-Nucleophiles
A novel
and efficient protocol for the synthesis of diarylallyl-functionalized
phosphonates, phosphinates, and phosphine oxides through the zinc-catalyzed
dehydroxylative phosphorylation of allylic alcohols with P(III)-nucleophiles
via a Michaelis–Arbuzov-type rearrangement is reported. A broad
range of allylic alcohols and P(III)-nucleophiles (P(OR)3, ArP(OR)2, and Ar2P(OR)) are well tolerated
in this reaction, and the expected dehydroxylative phosphorylation
products could be synthesized with good to excellent yields under
the optimal reaction conditions. The reaction can be easily scaled
up at a gram-synthesis level. Furthermore, through the step-by-step
control experiments, kinetic study experiments, and 31P
NMR tracking experiments, we acquired insights into the reaction and
proposed the possible mechanism for this transformation