Sulfonylation/cyclization reaction method of 1, 6-eneyne and sulfonyl chloride driven by visible light
A visible light and sulfonylation technology, applied in organic chemistry methods, chemical instruments and methods, organic chemistry, etc., can solve problems such as high reaction temperature, and achieve mild reaction conditions and a wide range of applications
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029]
[0030]Add 1,6-enyne compound (39.8mg, 0.2mmol) shown in the Schlenk bottle in the formula 1a, the sulfonyl chloride compound (57.0mg, 0.3mmol) shown in the formula 2a and tetrahydrofuran (2mL), then react The device was stirred and reacted under an air atmosphere at 25°C under a 3W blue LED lamp, and the reaction process was monitored by TLC until the raw materials disappeared (reaction time was 36 hours). After the reaction was completed, the reaction solution was concentrated under reduced pressure to remove the solvent, and the remaining The product was separated by column chromatography (elution solvent: ethyl acetate / n-hexane) to obtain the target product I-1 (83% yield); 1 H NMR (500MHz, CDCl 3 )δ: 7.73(d, J=8.0Hz, 2H), 7.66(d, J=8.5Hz, 2H), 7.39(t, J=8.0Hz, 2H), 7.26-7.24(m, 2H), 7.20- 7.17(m, 1H), 5.43-5.41(m, 1H), 5.36-5.35(m, 1H), 4.69-4.66(m, 1H), 4.51-4.47(m, 1H), 3.87(d, J=14.5 Hz, 1H), 3.48(d, J=14.5Hz, 1H), 2.37(s, 3H), 1.38(s, 3H); 13 C NMR (125 ...
Embodiment 2
[0032] Ethyl acetate (2 mL) was used to replace tetrahydrofuran, and the remaining conditions were the same as in Example 1, and the yield of the target product I-1 was 13%.
Embodiment 3
[0034] Ethanol (2 mL) was used instead of tetrahydrofuran, and the other conditions were the same as in Example 1 to obtain the target product I-1 with a yield of 17%.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com