- Iodine/TBHP-Promoted One-Pot Deoxygenation and Direct 2-Sulfonylation of Quinoline N-Oxides with Sodium Sulfinates: Facile and Regioselective Synthesis of 2-Sulfonylquinolines
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A highly efficient iodine/TBHP-mediated one-pot deoxygenative and regioselective 2-sulfonylation of quinoline N-oxides with sodium sulfinate salts has been developed. This metal-, base-, and phosphorus-free protocol employs readily accessible and easy-to-handle reagents and can be conveniently carried out at room temperature under mild conditions, providing an alternative access to a series of 2-sulfonylquinolines and other related heteroaryl sulfone products in moderate-to-excellent yields within a short reaction time.
- Sumunnee, Ladawan,Buathongjan, Chonchanok,Pimpasri, Chaleena,Yotphan, Sirilata
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supporting information
p. 1025 - 1032
(2017/02/15)
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- Method for preparing aryl sulfinate
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The invention provides a method for preparing an aryl sulfinate compound through the reaction of diaryl iodonium salt and sodium formaldehyde sulfoxylate.At room temperature, the diaryl iodonium salt reacts with the sodium formaldehyde sulfoxylate for 10-120 minutes to generate the corresponding aryl sulfinate compound.The method has the advantages that the reaction conditions are mild, the used reagents re easy to obtain, the application range of a substrate is wide, operation is simple, reaction is quick, and the like.
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Paragraph 0016
(2016/10/08)
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- Synthesis of sodium aryl sulfinates from aryl bromides employing 1,4-diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct (DABSO) as a bench-stable, gas-free alternative to SO2
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A convenient two-step protocol for the synthesis of sodium aryl sulfinates from aryl bromides and the SO2 surrogate 1,4-diazabicyclo[2.2.2]octane bis(sulfur dioxide) adduct (DABSO) has been developed. A wide range of aryl bromides with respect to electronic properties were employed to give the corresponding sodium arylsulfinates in good to excellent yields. The protocol is especially efficient for electron poor aryl bromides which are often difficult to prepare using existing methods.
- Skillinghaug, Bobo,Rydfjord, Jonas,Odell, Luke R.
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supporting information
p. 533 - 536
(2016/01/20)
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