Advertisements
Advertisements
प्रश्न
Answer the following
How will you illustrate the principle, minimization of steps?
Advertisements
उत्तर
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
संबंधित प्रश्न
Choose the most correct option.
Which of the following is ϒ-isomer of BHC?
Write the formula to calculate the % atom economy.
Explain any three principles of green chemistry.
Answer the following:
Explain the atom economy with a suitable example.
Bottom ash of thermal power stations can be used as raw material for cement and brick industry. This example illustrates which of the following principle of green chemistry?
According to less hazardous chemical synthesis point of view, instead of harmful DDT now a days _______ is used as insecticides.
Catalyst used for hydrogenation of oil is ___________
Mention the total number of principles of green chemistry.
Name the γ-isomer of Benzene hexachloride.
Which principle of green chemistry has its perspective towards carrying out reactions at room temperature and pressure?
Define atom economy.
Write one example of safer solvent and hazardous solvent.
Explain prevention of waste or by products which is one of the principles of green chemistry.
____________ can be categorised as a green solvent.
The formula for percentage atom economy is:
`("Formula weight of the desired product")/("'X'") xx 100`
Here, 'X' is ____________.
Mandelonitrile is obtained by the reaction between hydrogen cyanide and ______.
The international plastic recycle mark with 'Number 1' is given to ____________.
All the following statements are CORRECT, EXCEPT:
Identify the use of polyethylene terephthalate.
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?
If salicylic acid (138 u) reacts with acetic anhydride (102 u) to from aspirin (180 u) calculate % atom economy.
Which of the following is used as green solvent?
