SAI Life Sciences Research Chemist Interview Questions and Answers for Freshers

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Q1. Protecting amine compund
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Protecting amine compounds is important in organic synthesis to prevent unwanted reactions.
• A common method for protecting amines is to convert them into their corresponding amine salts.

• Another approach is to use protecting groups, such as Boc (tert-butyloxycarbonyl) or Fmoc (fluorenylmethyloxycarbonyl), which can be selectively removed later.

• Protecting amines can also be achieved by converting them into amides or carba...read more
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Q2. What are couplings reactions
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Coupling reactions are chemical reactions that involve the formation of a covalent bond between two molecules.
• Coupling reactions involve the combination of two molecules to form a new compound.

• These reactions often require a catalyst to facilitate the bond formation.

• Coupling reactions can be used in organic synthesis to create complex molecules.

• Examples of coupling reactions include the Suzuki coupling, Heck reaction,
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Q3. What are NMR values for solvents
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NMR values for solvents are specific chemical shifts observed in nuclear magnetic resonance spectroscopy.
• NMR values for solvents refer to the chemical shifts observed in nuclear magnetic resonance spectroscopy.

• These values are used to identify and characterize solvents in chemical reactions.

• Common solvents and their NMR values include chloroform (7.26 ppm), acetone (2.22 ppm), and methanol (3.34 ppm).
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