Home

Citation: Hong Sanguo, Feng Wenlin, Fu Xiaoyuan*. MINDO/3 STUDY OF THE TAUTOMERIC REACTIONS OF THE TAUTOMERS OF CYTOSINE Ⅲ. THE TAUTOMERIC REACTION OF N₃-H-4-NH₂-2-OXO-CYTOSINE AND 4-NH₂-2-OH-ISOCYTOSINE[J]. Acta Physico-Chimica Sinica, ;1988, 4(05): 461-465. doi: 10.3866/PKU.WHXB19880505 shu

MINDO/3 STUDY OF THE TAUTOMERIC REACTIONS OF THE TAUTOMERS OF CYTOSINE Ⅲ. THE TAUTOMERIC REACTION OF N₃-H-4-NH₂-2-OXO-CYTOSINE AND 4-NH₂-2-OH-ISOCYTOSINE

1.
Quantum Chemistry Laboratory; Dept. of Chem. Beijing Normal University

Received Date: 23 December 1986
Available Online: 15 October 1988

The molecular structures of 4-NH_2-2-OH-isocytosine (for short, iso-lactim) and N_3-H-4-NH_2-2-OXO-cytosine (for short, iso-lactam) have been optimized by MINDO/3. Iso-lactam is more stable than iso-lactim by ΔE=4.9kcal mol~(-1).
The geometric parameters of the transition state have been optimized by Powell's procedure which is contained in MINDO/3 program. The reaction pathway of the iso-lactam<=>iso-lactim has been studied by K. Fukui's IRC theory. The activation energies are 43.4 kcal mol~(-1) and 38.5 kcal mol~(-1) for the forward and backward reaction, respectively. An electron transfer scheme has been suggested to explain the nature of the tautomeric reactions of the tautomers of cytosine.
1. [1]
  Tianlong Zhang , Rongling Zhang , Hongsheng Tang , Yan Li , Hua Li . Online Monitoring and Mechanistic Analysis of 3,5-diamino-1,2,4-triazole (DAT) Synthesis via Raman Spectroscopy: A Recommendation for a Comprehensive Instrumental Analysis Experiment. University Chemistry, 2024, 39(6): 303-311. doi: 10.3866/PKU.DXHX202312006
2. [2]
  Yufang GAO , Nan HOU , Yaning LIANG , Ning LI , Yanting ZHANG , Zelong LI , Xiaofeng LI . Nano-thin layer MCM-22 zeolite: Synthesis and catalytic properties of trimethylbenzene isomerization reaction. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1079-1087. doi: 10.11862/CJIC.20240036
3. [3]
  Yongqing Kuang , Jie Liu , Jianjun Feng , Wen Yang , Shuanglian Cai , Ling Shi . Experimental Design for the Two-Step Synthesis of Paracetamol from 4-Hydroxyacetophenone. University Chemistry, 2024, 39(8): 331-337. doi: 10.12461/PKU.DXHX202403012
4. [4]
  Yanglin Jiang , Mingqing Chen , Min Liang , Yige Yao , Yan Zhang , Peng Wang , Jianping Zhang . Experimental and Theoretical Investigations of Solvent Polarity Effect on ESIPT Mechanism in 4′-N,N-diethylamino-3-hydroxybenzoflavone. Acta Physico-Chimica Sinica, 2025, 41(2): 100012-. doi: 10.3866/PKU.WHXB202309027
5. [5]
  Jingzhao Cheng , Shiyu Gao , Bei Cheng , Kai Yang , Wang Wang , Shaowen Cao . 4-氨基-1H-咪唑-5-甲腈修饰供体-受体型氮化碳光催化剂的构建及其高效光催化产氢研究. Acta Physico-Chimica Sinica, 2024, 40(11): 2406026-. doi: 10.3866/PKU.WHXB202406026
6. [6]
  Guoqiang Chen , Zixuan Zheng , Wei Zhong , Guohong Wang , Xinhe Wu . 熔融中间体运输导向合成富氨基g-C₃N₄纳米片用于高效光催化产H₂O₂. Acta Physico-Chimica Sinica, 2024, 40(11): 2406021-. doi: 10.3866/PKU.WHXB202406021
7. [7]
  Lina Guo , Ruizhe Li , Chuang Sun , Xiaoli Luo , Yiqiu Shi , Hong Yuan , Shuxin Ouyang , Tierui Zhang . 层状双金属氢氧化物的层间阴离子对衍生的Ni-Al₂O₃催化剂光热催化CO₂甲烷化反应的影响. Acta Physico-Chimica Sinica, 2025, 41(1): 2309002-. doi: 10.3866/PKU.WHXB202309002
8. [8]
  Danqing Wu , Jiajun Liu , Tianyu Li , Dazhen Xu , Zhiwei Miao . Research Progress on the Simultaneous Construction of C—O and C—X Bonds via 1,2-Difunctionalization of Olefins through Radical Pathways. University Chemistry, 2024, 39(11): 146-157. doi: 10.12461/PKU.DXHX202403087
9. [9]
  Yahui HAN , Jinjin ZHAO , Ning REN , Jianjun ZHANG . Synthesis, crystal structure, thermal decomposition mechanism, and fluorescence properties of benzoic acid and 4-hydroxy-2, 2′: 6′, 2″-terpyridine lanthanide complexes. Chinese Journal of Inorganic Chemistry, 2025, 41(5): 969-982. doi: 10.11862/CJIC.20240395
10. [10]
  Wei Zhong , Dan Zheng , Yuanxin Ou , Aiyun Meng , Yaorong Su . K原子掺杂高度面间结晶的g-C₃N₄光催化剂及其高效H₂O₂光合成. Acta Physico-Chimica Sinica, 2024, 40(11): 2406005-. doi: 10.3866/PKU.WHXB202406005
11. [11]
  Aiyi Xin , Jiawei Li , Xinyang Ran , Chuanjiang Fu , Zhiguo Wang . Collaborative Science and Education Based Experimental Design in Organic Chemistry: A Case Study of the Nucleophilic Substitution Reaction of 2-Hydroxymethyl-4,6-Di-Tert-Butylphenol. University Chemistry, 2025, 40(5): 366-375. doi: 10.12461/PKU.DXHX202407031
12. [12]
  Conghao Shi , Ranran Wang , Juli Jiang , Leyong Wang . The Illustration on Stereoisomers of Macrocycles Containing Multiple Chiral Centers via Tröger Base-based Macrocycles. University Chemistry, 2024, 39(7): 394-397. doi: 10.3866/PKU.DXHX202311034
13. [13]
  Xiaolei Jiang , Fangdong Hu . Exploring the Mirror World in Organic Chemistry: the Teaching Design of “Enantiomers” from the Perspective of Curriculum and Ideological Education. University Chemistry, 2024, 39(10): 174-181. doi: 10.3866/PKU.DXHX202402052
14. [14]
  Renqing Lü , Shutao Wang , Fang Wang , Guoping Shen . Computational Chemistry Aided Organic Chemistry Teaching: A Case of Comparison of Basicity and Stability of Diazine Isomers. University Chemistry, 2025, 40(3): 76-82. doi: 10.12461/PKU.DXHX202404119
15. [15]
  Zhuoming Liang , Ming Chen , Zhiwen Zheng , Kai Chen . Multidimensional Studies on Ketone-Enol Tautomerism of 1,3-Diketones By ¹H NMR. University Chemistry, 2024, 39(7): 361-367. doi: 10.3866/PKU.DXHX202311029
16. [16]
  Guangming YIN , Huaiyao WANG , Jianhua ZHENG , Xinyue DONG , Jian LI , Yi'nan SUN , Yiming GAO , Bingbing WANG . Preparation and photocatalytic degradation performance of Ag/protonated g-C₃N₄ nanorod materials. Chinese Journal of Inorganic Chemistry, 2024, 40(8): 1491-1500. doi: 10.11862/CJIC.20240086
17. [17]
  Aidang Lu , Yunting Liu , Yanjun Jiang . Comprehensive Organic Chemistry Experiment: Synthesis and Characterization of Triazolopyrimidine Compounds. University Chemistry, 2024, 39(8): 241-246. doi: 10.3866/PKU.DXHX202401029
18. [18]
  Shiyan Cheng , Yonghong Ruan , Lei Gong , Yumei Lin . Research Advances in Friedel-Crafts Alkylation Reaction. University Chemistry, 2024, 39(10): 408-415. doi: 10.12461/PKU.DXHX202403024
19. [19]
  Yuexiang Liu , Xiangqiao Yang , Tong Lin , Guantian Yang , Xiaoyong Xu , Bubing Zeng , Zhong Li , Weiping Zhu , Xuhong Qian . Efficient continuous synthesis of 2-[3-(trifluoromethyl)phenyl]malonic acid, a key intermediate of Triflumezopyrim, coupling with esterification-condensation-hydrolysis. Chinese Chemical Letters, 2025, 36(1): 109747-. doi: 10.1016/j.cclet.2024.109747
20. [20]
  Yue Li , Minghao Fan , Conghui Wang , Yanxun Li , Xiang Yu , Jun Ding , Lei Yan , Lele Qiu , Yongcai Zhang , Longlu Wang . 3D layer-by-layer amorphous MoS_x assembled from [Mo₃S₁₃]^2- clusters for efficient removal of tetracycline: Synergy of adsorption and photo-assisted PMS activation. Chinese Chemical Letters, 2024, 35(9): 109764-. doi: 10.1016/j.cclet.2024.109764

Get Citation

PDF

XML

Metrics

PDF Downloads(1765)
Abstract views(2282)
HTML views(3)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return

MINDO/3 STUDY OF THE TAUTOMERIC REACTIONS OF THE TAUTOMERS OF CYTOSINE Ⅲ. THE TAUTOMERIC REACTION OF N3-H-4-NH2-2-OXO-CYTOSINE AND 4-NH2-2-OH-ISOCYTOSINE

Metrics

通讯作者: 陈斌, bchen63@163.com

MINDO/3 STUDY OF THE TAUTOMERIC REACTIONS OF THE TAUTOMERS OF CYTOSINE Ⅲ. THE TAUTOMERIC REACTION OF N₃-H-4-NH₂-2-OXO-CYTOSINE AND 4-NH₂-2-OH-ISOCYTOSINE