<MultiModal>![Organic reaction, the substrates are O=C1CCCC1 and O=C(C1)OC(C)(C)OC1=O. The two undergo dehydration under basic conditions to form A. A reacts under the conditions of pyridine, $D_2O$, and 1,4-dioxane to form B. B and B' constitute an equilibrium, and the molecular weight of B' is 214 g/mol](/media/uploads/2061ab14-92b1-4607-8558-8b14d37446d7.png)</MultiModal>  

It is known that B does not contain a hydroxyl group, and B and B' are tautomers. B' generates G and H upon heating, and the reaction mechanism may be as follows: B' loses $(CH_3)_2CO$ under heating conditions to form C. C loses $CO_2$ to form D. D loses $CO$ to form E. E can be converted to F. F can be converted to G and H.  

It is known that the reaction types for B' losing small molecules to form C and F generating G and H are the same. D has two carbon atoms adopting sp hybridization, E has an electron-deficient structure, F has a six-membered ring, and the molecular weight of G is greater than that of H.  

Which of the following options is correct?
<MultiModal>![图片中为多步反应：O=C1CCCC1.O=C(OC(C)(O2)C)CC2=O>[base].[-H2O]>[*],[*]>[2H]O[2H].C1=CN=CC=C1.C2COCCO2>[*],[*]>>[*]。第一步反应在碱性条件进行且脱水，第一步反应的产物记为A。第二步反应的产物记为B，第三步反应的产物记为B'，B'的分子量是214g/mol](/media/uploads/2061ab14-92b1-4607-8558-8b14d37446d7.png)</MultiModal>

已知B不含羟基，B和B'为互变异构体。B'在受热的情况下会生成G和H，反应历程可能如下：B'在加热条件下脱去$(CH_3)_2CO$生成C。C脱去$CO_2$生成D。D脱去$CO$生成E。E可以转变为F。F可以转变为G和H。

已知B'脱去小分子生成C和F生成G和H反应类型相同，D有两个碳原子采取sp杂化，E具有缺电子结构，F具有六元环，G的分子量大于H。

下列选项正确的是什么？
If isotopic differences are ignored, B has one more $H_2O$ in its molecular formula than A.
B' has a conjugated diene structure and lacks a hydroxyl group.
There are no atoms in C that adopt sp hybridization.
D contains a carbon-carbon triple bond structure
E exhibits a carbene structure and the carbon that does not satisfy the octet rule conjugates with a carbon-carbon double bond.
The structures of D, E, F, G, and H all contain mirror planes (assuming the rings are planar).
若忽略同位素差异，B比A在分子式上多了$H_2O$
B'存在共轭二烯结构，不存在羟基
C中没有原子采取sp杂化
D存在碳碳叁键结构
E存在卡宾结构，且其中不满足八电子规则的碳和碳碳双键共轭
D,E,F,G,H的结构均含有镜面(假定环为平面)
A=<MultiModal>![CC1(C)OC(=O)C(=C2CCCC2)C(=O)O1](/media/uploads/13ede42e-029a-4bb4-8f5c-e9dce9779e15.png)</MultiModal>

B=<MultiModal>![CC1(C)OC(=O)C(=C2C([2H])([2H])CCC2([2H])[2H])C(=O)O1](/media/uploads/dcb3c036-4404-4072-9fcb-ecc56157a475.png)</MultiModal>

B'=<MultiModal>![CC1(C)OC([2H])=C(C2=C([2H])CCC2([2H])[2H])C(=O)O1](/media/uploads/5e1694c2-841a-4ea6-9dfe-d40c07128db2.png)</MultiModal>

C=<MultiModal>![C1CC([2H])([2H])C(=C1[2H])C(=C=O)C(=O)O[2H]](/media/uploads/f711d2dd-7ac0-4c3b-8ab2-ff532b6a0e06.png)</MultiModal>

D=<MultiModal>![C1CC([2H])([2H])C(=C=C=O)C1([2H])[2H]](/media/uploads/b0344851-06e5-4fea-9587-4f03e18bc8c7.png)</MultiModal>

E=<MultiModal>![[2H]C1([2H])CCC([2H])([2H])C1=[C]](/media/uploads/c143fb98-289e-443c-bd24-139b34c453de.png)</MultiModal>

F=<MultiModal>![[2H]C1([2H])CCC([2H])([2H])C#C1](/media/uploads/765e38b0-3d57-40d8-8866-ead85b0897a3.png)</MultiModal>

G=<MultiModal>![C([2H])([2H])=C=C=C([2H])[2H]](/media/uploads/e9455b6e-b2ea-40ab-9406-f08a5e88b732.png)</MultiModal>

H=$C_2H_4$  

The acidic hydrogen in A is deuterated to form B. B and B' exhibit keto-enol tautomerism. A 1,2-migration occurs from E to F. The decomposition of F and B involves retro-cycloaddition reactions.  

If isotopic differences are ignored, A and B have the same molecular formula.  

<Checkpoint>[If isotopic differences are ignored, A and B have the same molecular formula.](1)</Checkpoint>  

B' contains a conjugated diene and a hydroxyl group.  

<Checkpoint>[B' contains a conjugated diene and a hydroxyl group.](1)</Checkpoint>  

The carbon atom of the ketene in C is sp-hybridized.  

<Checkpoint>[The carbon atom of the ketene in C is sp-hybridized.](1)</Checkpoint>  

D contains an allene structure but no carbon-carbon triple bond.  

<Checkpoint>[D contains an allene structure but no carbon-carbon triple bond.](1)</Checkpoint>  

E has a carbene structure, but the non-bonding orbital of the carbene and the orbital forming the carbon-carbon double bond are not parallel, so the carbon violating the octet rule cannot conjugate with the carbon-carbon double bond.  

<Checkpoint>[In E, the carbon violating the octet rule cannot conjugate with the carbon-carbon double bond.](1)</Checkpoint>  

If the rings of D, E, and F are assumed to be planar, the ring plane serves as a molecular mirror plane; molecules G and H are also planar and possess mirror planes. Option F is correct.  

<Checkpoint>[If the rings are assumed planar, the structures of D, E, F, G, and H all contain mirror planes.](1)</Checkpoint>
A=<MultiModal>![CC1(C)OC(=O)C(=C2CCCC2)C(=O)O1](/media/uploads/13ede42e-029a-4bb4-8f5c-e9dce9779e15.png)</MultiModal>

B=<MultiModal>![CC1(C)OC(=O)C(=C2C([2H])([2H])CCC2([2H])[2H])C(=O)O1](/media/uploads/dcb3c036-4404-4072-9fcb-ecc56157a475.png)</MultiModal>

B'=<MultiModal>![CC1(C)OC([2H])=C(C2=C([2H])CCC2([2H])[2H])C(=O)O1](/media/uploads/5e1694c2-841a-4ea6-9dfe-d40c07128db2.png)</MultiModal>

C=<MultiModal>![C1CC([2H])([2H])C(=C1[2H])C(=C=O)C(=O)O[2H]](/media/uploads/f711d2dd-7ac0-4c3b-8ab2-ff532b6a0e06.png)</MultiModal>

D=<MultiModal>![C1CC([2H])([2H])C(=C=C=O)C1([2H])[2H]](/media/uploads/b0344851-06e5-4fea-9587-4f03e18bc8c7.png)</MultiModal>

E=<MultiModal>![[2H]C1([2H])CCC([2H])([2H])C1=[C]](/media/uploads/c143fb98-289e-443c-bd24-139b34c453de.png)</MultiModal>

F=<MultiModal>![[2H]C1([2H])CCC([2H])([2H])C#C1](/media/uploads/765e38b0-3d57-40d8-8866-ead85b0897a3.png)</MultiModal>

G=<MultiModal>![C([2H])([2H])=C=C=C([2H])[2H]](/media/uploads/e9455b6e-b2ea-40ab-9406-f08a5e88b732.png)</MultiModal>

H=$C_2H_4$

A中的酸性氢被氘代变为B。B和B'有酮与烯醇的互变异构。E到F发生1,2-迁移。F和B的分解都是逆环加成反应。

若忽略同位素差别，A和B的分子式相同。

<Checkpoint>[若忽略同位素差别，A和B的分子式相同。](1)</Checkpoint>

B'存在共轭二烯和羟基。

<Checkpoint>[B'存在共轭二烯和羟基。](1)</Checkpoint>

C中烯酮的碳原子为sp杂化。

<Checkpoint>[C中烯酮的碳原子为sp杂化。](1)</Checkpoint>

D存在联烯，没有碳碳叁键。

<Checkpoint>[D存在联烯，没有碳碳叁键。](1)</Checkpoint>

E有卡宾结构，但卡宾的未成键轨道和形成碳碳双键的轨道不平行，因此不满足八电子规则的碳和碳碳双键不能共轭。

<Checkpoint>[E中不满足八电子规则的碳和碳碳双键不能共轭。](1)</Checkpoint>

若假定D,E,F的环为平面，则环平面为分子的镜面；G,H分子为平面形，也有镜面。F选项正确。

<Checkpoint>[若假定环为平面，D,E,F,G,H的结构均含有镜面。](1)</Checkpoint>