| Autor: |
Ting Xiong, Hao Yuan, Fuxing Yang, Jun Jiang |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Green Synthesis and Catalysis, Vol 3, Iss 1, Pp 46-52 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2666-5549 |
| DOI: |
10.1016/j.gresc.2021.10.005 |
| Popis: |
An intriguing Brønsted acid-catalyzed 1,6-hydrophosphination of in situ generated propargylic para-quinone methides (p-QMs) and aza-para-quinone methides (aza-p-QMs) with H-phosphorus oxides via dehydration/1,6-addition under ultrasonic irradiation is described. This methodology provides a rapid and green approach for the construction of diarylmethyl phosphorus oxides bearing phosphorus-substituted quaternary carbon centers in high yields (up to 98% yield) within merely 5 min. This environmentally benign protocol represents a unique example of 1,6-conjugate additions of propargylic p-QMs and aza-p-QMs for site-selective C–P bond formation in an operationally simple and atom-economical manner. The use of readily available Brønsted acid catalyst, operationally simplicity, high yields, and high atom economy make this protocol very facile, practical, easily scaled-up and environmentally friendly. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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