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Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
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In this video, we describe a cell chirality assay to determine the alignment bias of cells in a confined geometric boundary such as a ring micropattern. Chirality is an inherent property of most cell types and is determined by genetic and environmental factors. Knowing the chirality of a normal cell population can help to screen drug-treated...
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Related Experiment Video

Updated: Jan 20, 2026

A Micropatterning Assay for Measuring Cell Chirality
08:07

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Published on: March 11, 2022

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Chirality transfer from silicon to carbon.

Martin Oestreich1

  • 1Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany. martin.oestreich@orgmail.chemie.uni-freiburg.de

Chemistry (Weinheim an Der Bergstrasse, Germany)
|October 11, 2005
PubMed
Summary

Chiral silicon compounds enable stereoselective synthesis by controlling stereochemistry. Recent advances demonstrate direct chirality transfer from silicon to carbon, opening new synthetic possibilities.

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Chirality: Chiral and Achiral Molecules
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Chirality: Chiral and Achiral Molecules
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Area of Science:

  • Organic Chemistry
  • Stereoselective Synthesis
  • Organosilicon Chemistry

Background:

  • Exploiting silicon's asymmetry in stereoselective synthesis is challenging.
  • Silicon-stereogenic silanes have been used for mechanistic studies.
  • Few synthetic applications use asymmetric silicon as a stereochemical controller (chiral auxiliary).

Purpose of the Study:

  • To discuss the direct transfer of chirality from silicon to carbon.
  • To explore suitable silanes for efficient chirality transfer.
  • To outline mechanistic prerequisites for successful chirality transfer.

Main Methods:

  • Review of existing literature on silicon-stereogenic silanes.
  • Analysis of mechanistic pathways for chirality transfer.
  • Discussion of inter- and intramolecular reaction examples.

Main Results:

  • Demonstration of direct chirality transfer from silicon to carbon in reactions.
  • Identification of key factors influencing chirality transfer efficiency.
  • Highlighting the potential of asymmetric silicon in synthesis.

Conclusions:

  • Direct chirality transfer from silicon to carbon is now achievable.
  • Understanding silane structure and reaction mechanisms is crucial.
  • This opens new avenues for asymmetric synthesis using silicon.