Question
Give examples of alkoxysubstituted LAH reducing agents. Compare their selectivity with LAH.
Answer :
Word Count : 227
_______ _________ ______ ________ ___.
_________ _______ ____ _____ ________ ______ _______.
________ _____ ________ ___ _________ ______ ___ _____ _________ __________ _______.
_________ _______ ________ _______ _______ __________.
_____ _________ ____ _______ _______ ___ ___ ______ ____.
______ __________ _____ __________ _________.
____ _________ _________ ________ ____ ____ _________ ________ ____ ________ _____.
__________ ______ ________ _________ ______ __________ ______ _____.
_________ __________ ________ ___ ________ _____ __________.
________ __________ ____ _________ __________ ___ ________ ________ ____ ___ _________ ________.
_______ ___ __________ __________ ___ ___ _________ ______ __________.
____ ____ ___ ______ ________ _____ _____ ___ _________ _________.
______ _______ __________ _______ _________ ________ _________ _______.
___ ____ ______ _________ _____ _____ _________ ___ _______ __________ ___ ___.
_________ _________ ________ ________ ____.
__________ _________.
Skip in 10
Alkoxysubstituted lithium aluminium hydrides (LAH derivatives) are modified reducing agents in which one or more hydride ions of LAH are replaced by alkoxy groups. Common examples include lithium tri-tert-butoxyaluminium hydride (LiAlH(OtBu)₃), lithium di-tert-butoxyaluminium hydride (LiAlH₂(OtBu)₂), lithium triethoxyaluminium hydride (LiAlH(OEt)₃), and lithium triisopropoxyaluminium hydride (LiAlH(OiPr)₃). These derivatives are often referred to as "sterically hindered" or "selective" reducing agents due to the presence of bulky alkoxy groups which reduce the nucleophilicity of the remaining hydride. The main difference between LAH and its alkoxysubstituted derivatives lies in reactivity and selectivity. LAH is a very
___ __________ __________ __________ _______ __________ _________ __________ ______._______ _________ ______ ________ ___.
_________ _______ ____ _____ ________ ______ _______.
________ _____ ________ ___ _________ ______ ___ _____ _________ __________ _______.
_________ _______ ________ _______ _______ __________.
_____ _________ ____ _______ _______ ___ ___ ______ ____.
______ __________ _____ __________ _________.
____ _________ _________ ________ ____ ____ _________ ________ ____ ________ _____.
__________ ______ ________ _________ ______ __________ ______ _____.
_________ __________ ________ ___ ________ _____ __________.
________ __________ ____ _________ __________ ___ ________ ________ ____ ___ _________ ________.
_______ ___ __________ __________ ___ ___ _________ ______ __________.
____ ____ ___ ______ ________ _____ _____ ___ _________ _________.
______ _______ __________ _______ _________ ________ _________ _______.
___ ____ ______ _________ _____ _____ _________ ___ _______ __________ ___ ___.
_________ _________ ________ ________ ____.
__________ _________.
IGNOU ACADEMY
Your IGNOU journey, made easier.
- Solved Assignments
- Study Notes
- Guess Papers
- Question Papers
Continue Reading — It's Free
Sign in with Google to unlock more of this answer.
✓ Free access
✓ Unlock up to 60% of the answer
✓ No payment required
✓ Unlock up to 60% of the answer
✓ No payment required
Quick Google sign-in. No separate registration form.