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                                    ![51181-43-2 structure]()  51181-43-2
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                            | Literature: Wang, Gangqiang; Guan, Zhi; Tang, Rongchang; He, Yanhong Synthetic Communications, 2010 , vol. 40, # 3 p. 370 - 377 | 
                        
                        
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                                    ![51181-43-2 structure]()  51181-43-2
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                            | Literature: Koga, Yuji; Kusama, Hiroyuki; Narasaka, Koichi Bulletin of the Chemical Society of Japan, 1998 , vol. 71, # 2 p. 475 - 482 | 
                        
                        
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                                    ![51181-43-2 structure]()  51181-43-2
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                            | Literature: Bailey et al. Journal of Organic Chemistry, 1956 , vol. 21, p. 297,301 | 
                        
                        
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                                    ![51181-43-2 structure]()  51181-43-2
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                            | Literature: Couper; Lutz Journal of Organic Chemistry, 1942 , vol. 7, p. 79,84 | 
                        
                        
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                                    ![51181-43-2 structure]()  51181-43-2
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                            | Literature: Amarnath, Venkataraman; Amarnath, Kalyani Journal of Organic Chemistry, 1995 , vol. 60, # 2 p. 301 - 307 | 
                        
                        
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                                    ![51181-43-2 structure]()  51181-43-2
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                            | Literature: Bailey et al. Journal of Organic Chemistry, 1956 , vol. 21, p. 297,301 | 
                        
                        
                            | 
 
                                    
                                    ![51181-43-2 structure]()  51181-43-2
                                     | 
                        
                            | Literature: Lutz; Kibler Journal of the American Chemical Society, 1940 , vol. 62, p. 1520,1522 | 
                        
                        
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                                    ![51181-43-2 structure]()  51181-43-2
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                            | Literature: Lutz; Taylor Journal of the American Chemical Society, 1933 , vol. 55, p. 1593,1597 | 
                        
                        
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                            | Literature: Couper; Lutz Journal of Organic Chemistry, 1942 , vol. 7, p. 79,84 |