C. Roussel, M. Adjimi, A. Chemlal, and A. Djafri, Comparison of racemization processes in 1-arylpyrimidine-2-thione and

F. Andreoli, J. Org. Chem, vol.51, pp.5076-5080, 1988.

C. Roussel, Synthesis, chiral separation, barrier to rotation and absolute configuration of N-(ortho-functionalized-aryl)-4-alkyl-thiazolin-2-one and thiazoline-2-thione atropisomers, Lett. Org. Chem, vol.2, pp.433-443, 2005.

C. Roussel and C. Suteu, Investigation into the chiral recognition mechanism of N-arylthiazolin-2(thi)one atropisomers on Chiralcel OJ by factorial design and lipophilicity approaches, Journal of Chromatography A, vol.761, issue.1-2, pp.129-138, 1997.
DOI : 10.1016/S0021-9673(96)00790-X

H. Hussain, A. Harrasi, I. R. Green, I. Ahmed, and G. Abbas, Rehman N.U. meta-Chloroperbenzoic acid (mCPBA): a versatile reagent in organic synthesis Novel benzothiophene 1,1-dioxide deoxygenation path for the microwave-assisted synthesis of substituted benzothiophene-fused pyrrole derivatives, Mol. Divers, vol.4, issue.21, pp.12882-12917, 2017.

N. Vanthuyne and C. Roussel, In Differentiation of enantiomers part I Ed. V. Schurig Book Series: Topics in Current Chemistry, pp.107-151, 2013.

W. H. Pirkle, C. J. Welch, W. H. Pirkle, M. E. Koscho, and Z. Wu, Use of simultaneous face to face and face to edge ??-?? interactions to facilitate chiral recognition, Tetrahedron: Asymmetry, vol.5, issue.5, pp.777-780, 1994.
DOI : 10.1016/S0957-4166(00)86225-4

C. Roussel, N. Hart, B. Bonnet, C. Suteu, A. Hirtopeanu et al., Contribution of chiral HPLC in tandem with polarimetric detection in the determination of absolute configuration by chemical interconversion method: Example in 1-(thi)oxothiazolinyl-3-(thi)oxothiazolinyl toluene atropisomer series, Chirality, vol.726, issue.8, pp.665-673, 2002.
DOI : 10.1016/0021-9673(95)00949-3

J. L. Abboud, C. Roussel, E. Gentric, K. Sraidi, J. Lauransan et al., Studies on amphiprotic compounds. 3. Hydrogen-bonding basicity of oxygen and sulfur compounds, The Journal of Organic Chemistry, vol.53, issue.7, pp.1545-1550, 1988.
DOI : 10.1021/jo00242a039

C. Roussel and J. Metzger, Heteroassociation of heterocyclic amides and thioamides: selection by proton accepting and donating abilities, New J. Chem, vol.4, pp.743-746, 1980.

, This work was presented in part as an oral communication during " Chirality 2015 ISCD-27 Boston " meeting, 2015.

J. E. Baldwin and J. A. Walker, Competing [1-3]- and [3,3]-sigmatropic rearrangements of electron-rich olefins, Journal of the American Chemical Society, vol.96, issue.2, pp.596-597, 1974.
DOI : 10.1021/ja00809a053

T. Itoh, K. Nagata, M. Okada, K. Yamaguchi, and A. Ohsawa, The reaction of 3,3???-dimethyl-2,2???-bithiazolinium salts with superoxide, Tetrahedron Letters, vol.33, issue.46, pp.6983-6986, 1992.
DOI : 10.1016/S0040-4039(00)60912-7

K. Yamaguchi, T. Itoh, K. Nagata, M. Okada, and A. Ohsawa, Two novel ten-membered ring compounds: 1,2,5,8-dithiadiazecine-6,7-diones, Section C: Crystal Structure Communications, pp.1514-1517, 1993.
DOI : 10.1107/S010827019300099X

T. Itoh, K. Nagata, M. Okada, and A. Ohsawa, The reaction of 3-methylthiazolium derivatives with superoxide, Tetrahedron, vol.49, issue.22, pp.4859-4870, 1993.
DOI : 10.1016/S0040-4020(01)80403-8

A. Lindamulage-de-silva, V. Risso, M. Jean, M. Giorgi, V. Monnier et al., A Forgotten Chiral Spiro Compound Revisited: 3,3'-Dimethyl-3H, pp.716-721, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01471007

T. Koizumi, N. Bashir, A. R. Kennedy, and J. A. Murphy, Diazadithiafulvalenes as electron donor reagents, Journal of the Chemical Society, Perkin Transactions 1, vol.1, issue.24, pp.3-5
DOI : 10.1039/a906684e

, Tetrahedron Lett, vol.47, pp.8333-8336, 2006.

G. Morel, G. Gachot, and D. Lorcy, Chemical and Electrochemical Investigations on the Powerful ??-Electron Donor Dithiadiazafulvalene: Isolation, Spectroscopic Characterization and Charge-Transfer Complexation, Synlett, issue.7, pp.1117-1120, 2005.
DOI : 10.1055/s-2005-865204

M. Bssaibis, A. Robert, P. Lemagueres, L. Quahab, R. Carlier et al., A new route to dithiadiazafulvalene derivatives from mesoionic thiazoles. Formation of a ten-membered macrocycle by oxidation with oxygen and in situ generation of a charge transfer complex with tetracyanoquinodimethane, J. Chem. Soc., Chem. Commun., vol.103, issue.7, pp.601-602, 1993.
DOI : 10.1021/ja00399a066

Y. Liu, C. Wang, D. Xue, M. Xiao, J. Liu et al., Reactions Catalysed by a Binuclear Copper Complex: Relay Aerobic Oxidation of N-Aryl Tetrahydroisoquinolines to Dihydroisoquinolones with a Vitamin B1 Analogue (b) For a recent review on proton abstraction in thiamine analogues Massi A. Thiamin-diphosphate-dependent enzymes as catalytic tools for the asymmetric benzoin-type reaction, Chem. Eur. J. Eur. J. Org. Chem, vol.23, issue.2016, pp.3062-3066, 2017.

J. Pesch, K. Harms, and T. Bach, Preparation of axially chiral N,N'-diarylimidazolium and N-arylthiazolium salts and evaluation of their catalytic potential in the benzoin and in the intramolecular Stetter reactions, Eur. J. Org. Chem, issue.18, pp.2025-2035, 2004.

G. Félix and R. Peresutti, One hundred years of helicene chemistry Part 2: stereoselective syntheses and chiral separations of carbohelicenes, Chem. Soc. Rev. E. C.; Lescop C, vol.42, issue.19, pp.1007-1050, 2013.

J. Autschbach, J. Crassous, E. Anger, I. Moore, B. Vanthuyne et al., Chiroptical properties of carbo[6]helicene derivatives bearing extended ?-conjugated cyano substituents Ruthenium-Grafted Vinylhelicenes: Chiroptical Properties and Redox Switching, Chirality Chem. Eur. J. N, vol.25, issue.21, pp.455-465, 2013.

L. Toupet, J. A. Williams, A. R. Torres, A. J. Riives, G. Muller et al., Synthesis and Chiroptical Properties of Hexa-, Octa-, and Deca-azaborahelicenes: Influence of Helicene Size and of the Number of Boron Atoms, Chem. Eur. J, vol.23, pp.2017-407
URL : https://hal.archives-ouvertes.fr/hal-01408590

P. L. Polavarapu, Molecular Structure Determination Using Chiroptical Spectroscopy: Where We May Go Wrong? Chirality, pp.909-920, 2012.

, PBE0/6-311G(d,p) levels to comply with a reviewer demand As expected for conformational analysis very minor changes in stereoisomer energies and interconversion barriers were observed, they do not significantly alter the general discussion based on the(d,p) level. The full resulting distorted tesseracts with conformer energies and barriers to interchange are given in the supporting information, 21) Additional DFT calculations were performed at the SMD(CH 2 Cl 2 SMD(CH 2 Cl 2 )SMD(CH 2 Cl 2, pp.6-311

, The tesseract presents 16 vertices and 32 edges, each edge being of the same length; in our work, it was largely distorted to place eight diastereosiomers in a front panel leading to the distorted tesseract displayed in Figure 7. For an example of the use of a four-dimensional hypercube (tesseract) in conformational analysis see: Alkorta, I.; Elguero, J. Conformational analysis of N,N'-dinaphthyl heterocyclic carbenes: imidazol-2- ylidenes and imidazolin-2-ylidenes, Struct. Chem, vol.22, issue.22, pp.1087-1094, 2011.

J. Sandström, Dynamic NMR Spectroscopy, pp.81-84, 1982.

R. Isaksson and T. Liljefors, ChemInform Abstract: CONFORMATIONS AND BARRIERS TO INVERSION OF SEVEN-MEMBERED CYCLIC OXAMIDES AND THEIR MONOTHIO AND DITHIO ANALOGS: A STUDY BY DYNAMIC NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY AND MOLECULAR MECHANICS, Chemischer Informationsdienst, vol.13, issue.4, pp.1344-1350, 1981.
DOI : 10.1039/p29810001344

R. B. Maharajh, J. P. Snyder, J. F. Britten, R. A. Bell, and A. D. Bain, Synthesis, high-field NMR, X-ray structure, and conformational analysis of a 10-membered diamide disulfide ring, Canadian Journal of Chemistry, vol.75, issue.2, pp.140-161, 1997.
DOI : 10.1139/v97-018
URL : http://www.nrcresearchpress.com/doi/pdf/10.1139/v97-018

S. Rigby and J. Valliant, NMR studies of chemical exchange amongst five conformers of a ten-membered ring compound containing two amide bonds and a disulfide, J. Chem. Soc., Perkin Trans, vol.2, pp.1447-1453, 1999.

A. J. Clark, D. P. Curran, D. J. Fox, F. Ghelfi, C. S. Guy et al., Phillips, J.M.; Roncaglia, F.; Sellars, P.B, issue.26

A. Chiral and E. , Substituent Effects, Rotation Barriers, and Implications for their Cyclization Reactions, J. Org. Chem, vol.81, pp.5547-5565, 2016.

R. Costil, Q. Lefebvre, and J. Clayden, Medium-sized-ring analogs of dibenzodiazepines by a conformationally induced Smiles ring expansion

, Angew. Chem. Int. Ed, vol.56, pp.14602-14606, 2017.

M. Qadir, J. Cobb, P. W. Sheldrake, N. Whittall, A. J. White et al., Conformation Analyses, Dynamic Behavior, and Amide Bond Distortions of Medium-sized Heterocycles. 2. Partially and Fully Reduced 1-Benzazocines, Benzazonines, and Benzazecines, The Journal of Organic Chemistry, vol.70, issue.5, pp.1552-1557, 2005.
DOI : 10.1021/jo048117j

M. J. Trucks, G. W. Schlegel, H. B. Scuseria, G. E. Robb, M. A. Cheeseman et al., 29) Gaussian 16 Revision A.03: Frisch

J. V. Ortiz, A. F. Izmaylov, J. L. Sonnenberg, D. Williams-young, F. Ding et al., Rendell, A.P.; Burant, J.C J.W

B. Fox, D. J. Gaussian, and . Inc, , 2016.