Home › Cell Biology › Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy
Cell Biology JoVE (Open Access) Citable · DOI

Versatile CO2 Transformations into Complex Products: A One-pot Two-step Strategy

DOI: 10.3791/60348-v
What you'll learn
  • ✓ Execute selective 4-electron CO2 reduction using hydroborane reductants
  • ✓ Synthesize bis(boryl)acetal intermediates for versatile onward transformations
  • ✓ Perform one-pot condensation and carbene-mediated C-C coupling reactions
  • ✓ Characterize product identity and purity via 1H NMR spectroscopy
Protocol

CO2 transformations are conducted in a one-pot two-step procedure for the synthesis of complex molecules. The selective 4 e- reduction of CO2 with a hydroborane reductant affords a reactive and versatile bis(boryl)acetal intermediate which is subsequently involved in condensation reaction or carbene-mediated C-C coupling generation.

Difficulty
advanced
Total time
~4–6 hours per synthesis sequence (including workup and NMR analysis)

Steps

1
Synthesize compound 2 via CO2 reduction

Perform selective 4-electron reduction of CO2 with hydroborane reductant to generate bis(boryl)acetal intermediate, then conduct condensation reaction to afford compound 2.

▶ 00:57
2
Synthesize compound 3 via carbene coupling

Apply carbene-mediated C-C coupling to the bis(boryl)acetal intermediate to generate compound 3 through onward transformation.

▶ 02:46
3
Synthesize compound 4 via alternative coupling

Execute an alternative condensation or coupling pathway on the bis(boryl)acetal intermediate to produce compound 4.

▶ 04:07
4
Analyze products by 1H NMR spectroscopy

Acquire and interpret 1H NMR spectra for compounds 1–4 to confirm product identity and assess reaction outcomes.

▶ 05:34
💬 Comments coming soon