What is the CMD process in organic chemistry

A Review of the Development of Organic Chemistry A Review of the Development of Organic Chemistry (1) Utilization of the year 770 In 780 AD, people began to use the year of substances from the bodies of plants and animals, such as: shochu.

Substances from plants and animals, such as soju, sugar, dyes, and medicines. ingredients and medications. (2) Extracted 1773: urea.

Extraction of urea 1773 1785: citric acid.

Lactic acid, tartaric acid.

Morphine Elemental Determination Elemental Determination Raw Citric Acid, Lactic Acid, Tartaric Acid, Morphine Elemental Determination Vitality Theory Organic Chemistry Vitality Theory Organic Chemistry (3) Synthesis Mid-19th century: with inorganic substances.

Ammonium cyanate Mid Century: Synthesis Mid Century (NH4CNO) First synthesis of urea acetic acid, lipid biogenous ) First synthesis of urea acetic acid, lipid bioacetic acid Vitality theory denied (4) Structure of organic compounds 1D 2D Structure of organic compounds 1D 2D (5) Modern Development of Organic Chemistry Modern Development of Organic Chemistry With the help of the progress of modern physics, organic chemistry has made great progress, and the progress of science, organic chemistry has made great progress, not only in A series of natural organic products have been isolated and extracted in the laboratory, and some compounds have not been found in nature, and some compounds have been synthesized that have not been found in nature, and some compounds that have not been found in nature have been synthesized, and the organic synthetic chemical industry has gradually emerged, especially dyes and the organic synthetic chemical industry, and the pharmaceutical industry is the most prominent.

Synergistic metallization and deprotonation.

Is it chemical material management?

The structure of A: is:

CH3) 2CH2C triCH: 4-methyl-1-pentyne.

1) Hydrogenation:

ch3), 2chch2c, three ch—>

ch3)2chch2ch2ch3.

2): Hydration:

ch3)2chch2coch3.(After H2O is added to the alkyne bond, enol is formed, and the enol reshoot is remade to the corresponding pentanone).

3) Reaction with cuprane:

CH3) 2CH2C triccu (precipitation) This is the standard method for the detection of terminal alkynes.

Quenching means that the reaction will not continue or that the reaction rate is low. Because the substrate concentration decreases, the reaction rate decreases. Or because other substances are introduced to bind to one of the substances in the substrate, the original reaction cannot occur.

The first reaction, the first step is the aldol reaction; The second step is the Grignard reagent conjugate addition (mixture, 1,4-addition is the main one). The second reaction, if it must be less than three carbons, the first step is acetyl chloride instead of acetic anhydride; In the second step, Horner Wadsworth Emmons reagent (methanol + phosphorus trichloride + ethyl chloride (bromine) acetate is prepared, and then catalyzed hydrogenation after the Horner Wadsworth Emmons reaction occurs.

1. Through the rotation of the C-C key in the ring BAI, it can be used from a DU chair structure.

zhi elephant dao transformed.

Another chair conformation. This version of the chair-like conformation has the right to turn the ring. 2. The organic matter containing a six-membered ring similar to the cyclohexane structure can be turned over in the structure: such as cyclohexane, decahydronaphthalene, etc. Explanation: 1. There are 12 C—H bonds in the chair cyclohexane molecule.

Figure 1 Draw a six-membered ring directly from the chemical formula:

In the proximity system, the large unit is placed in E such as R2, and the other is placed in A such as R9, if all A or E groups are too large.

Para-or meta-positions are all preferentially placed in E bonds, such as R2 and R6, if hydrogen bonds can be formed between the two groups, special treatment is required.

The group converted from Figure 2 to Figure 1 is divided into two groups, the cardinal group and the even group, the cardinal group must be all A or all E, and the corresponding even group is all E or A.

The group with the extra-large group is generally E, and the other groups are drawn accordingly.

Do more questions, and you will have an experience.

In the process of organic chemical substitution reaction, the reagent involved in the reaction is usually called the attack reagent, and the substituted group is called the leaving group.

1. For efficient learning, we must first learn to set goals for ourselves (big, small, long, short), so that there will be a direction for learning; Then groom yourself.

e68a8462616964757a686964616f31333363376535 learning situation, find out the weak links, existing problems, and knowledge points that are easy to lose points; In addition, allocate time reasonably, formulate learning tasks in a targeted manner, and implement them one by one.

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This promotes understanding and strengthens memory.

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！！！The first functional bai regiment is heavy.

Want. Second, DU understanding is also important! ~zhi

The name DAO said that there was no reason not to understand. Return.

Even if it's not in the book, it should be.

A General, like benzyl alcohol. It is a methyl group attached to the benzene ring. And then because it's alcohol! The functional group of alcohol is hydroxyl group. That's the hydroxyl group attached to the methyl group. is benzyl alcohol.

A, B, and C are named according to the number of carbon atoms! Structural scale models and spatial configurations You can find the 10 types of organic matter on the Internet to be more vivid!

Structural scissors. Remember the structural formula, and the structure will be simple naturally. It's like DNA translation, write it one by one!

Chemical formula note the general formula of this type of organic matter! That's all I have to say! ~

Yes, I'm a sophomore in high school, and my teacher always has to add some knowledge that is not mentioned in the books. But it's also important to be proficient in what ...... book is inFor example, what physical properties, chemical properties, etc., what substances cannot or can react with, and so on. If you still don't think it's enough, buy a workbook and want the kind that can summarize the knowledge points and have example problems to explain.

Hope that helps

The questions and the textbook will not be disconnected, and it is indeed difficult to start with the topic of organic chemistry at first, but as long as you grasp that organic chemical reactions occur on those functional groups of organic matter, it is much easier.