Advertisements
Advertisements
Question
Answer the following
How will you illustrate the principle, minimization of steps?
Solution
Reduce derivatives (Minimization of steps):
In organic synthesis protecting or blocking groups is commonly used. According to this principle of green chemistry, unnecessary derivatization, for example, installation/removal of the use of protecting groups should be minimized or avoided if possible, because such steps require additional reagents and can generate waste.
Illustration:
a. In organic synthesis, the protection of some functional groups is required. Again, the deprotection of the functional group is required at the end.
For example: Synthesis of m-hydroxybenzoic acid from mhydroxybenzaldehyde.
b. In such cases, the atom economy is also less.
c. The green chemistry principle aims to develop the methodology where unnecessary steps should be avoided. This can be done if possible, by using practicable biocatalytic reactions, which very often need no protection of the selective group.
APPEARS IN
RELATED QUESTIONS
Choose the most correct option.
Which of the following is ϒ-isomer of BHC?
Answer the following
Write the formula to calculate the % atom economy.
Answer the following
How will you illustrate the use of a safer solvent and auxiliaries?
Answer the following
Define catalyst.
Explain any three principles of green chemistry.
Answer the following
Give two examples of catalysts.
Catalyst used for hydrogenation of oil is ___________
In green technology developed by Drath and Frost, adipic acid is enzymatically synthesized from _______.
Name the γ-isomer of Benzene hexachloride.
Explain prevention of waste or by products which is one of the principles of green chemistry.
____________ can be categorised as a green solvent.
In the manufacture of phenol from isopropyl benzene, the important by-product obtained is ____________.
The international plastic recycle mark with 'Number 1' is given to ____________.
Which of the following is recycled to prepare foam packaging and light switchplates?
γ-isomer of BHC is called as ____________.
Identify the use of polyethylene terephthalate.
Identify the polymer used in making floor tiles.
Define the role of safer chemistry in accident prevention.
Calculate the atom economy of the following:
(At mass of C = 12, H = 1, 0 = 16)
\[\ce{CH3 - CH2 - OH ->[\Delta] CH2 = CH2 + H2O}\]
How many principles does green chemistry have?