The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《An efficient approach towards the stereospecific synthesis of epoxides from phospholene oxides》. Authors are Yamashita, Mitsuji; Krishna Reddy, Valluru; Rao, Lakonda Nagaprasada; Haritha, Buchammagari; Maeda, Motoki; Suzuki, Keiji; Totsuka, Hirono; Takahashi, Masaki; Oshikawa, Tatsuo.The article about the compound:4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxidecas:707-61-9,SMILESS:CC1=CP(CC1)(C2=CC=CC=C2)=O).Recommanded Product: 4-Methyl-1-phenyl-2,3-dihydro-1H-phosphole 1-oxide. Through the article, more information about this compound (cas:707-61-9) is conveyed.
A novel method has been developed for stereospecific conversion of 2-phospholene 1-oxides into their corresponding 2,3-epoxides in high yields using sodium peroxide as a reagent. 2,3-Dihydro-1-phenyl-1H-phosphole 1-oxide (I) was inert to oxidation with 3-chloroperbenzoic acid; oxidation of I with bromine or N-bromoacetamide gave 2-bromo-3-hydroxy-1-phenylphospholane oxide as diastereomeric mixture and subsequent treatment of the bromohydrin gave a mixture of (1R,2S,5S)-rel-2-phenyl-6-Oxa-2-phosphabicyclo[3.1.0]hexane 2-oxide (erythro, II) and (1R,2R,5S)-rel-2-phenyl-6-Oxa-2-phosphabicyclo[3.1.0]hexane 2-oxide (threo). Epoxidation of I using sodium peroxide [Na2(O2)] gave II as a single diastereomer in 76% yield. 2,3-Dihydro-4-methyl-1-phenyl-1H-phosphole 1-oxide and 2,3-dihydro-1-methoxy-4-methyl-1H-phosphole 1-oxide failed to react with sodium peroxide [Na2(O2)]. The compounds thus prepared are intermediates for AZT analogs of phospha sugars (no data).
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Reference:
1,3-Benzodioxole – Wikipedia,
Dioxole | C3H4O2 – PubChem